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BIOLOGY NATIONAL ENTERANCE EXAM 500 QUESTIONS
1. What is the main function of the cell membrane?
A) Store genetic information
B) Control cell division
C) Protect and regulate the entry and exit of substances
D) Produce energy
2. Which part of the cell is responsible for producing energy?
A) Nucleus
B) Mitochondria
C) Endoplasmic reticulum
D) Ribosome
3. In humans, which blood cells are responsible for carrying oxygen?
A) White blood cells
B) Platelets
C) Red blood cells
D) Plasma
4. The process by which green plants make their own food is called:
A) Respiration
B) Transpiration
C) Photosynthesis
D) Digestion
5. Which organ in the human body is responsible for filtering blood?
o A) Liver
o B) Kidney
o C) Heart
o D) Lungs
6. What is the function of the large intestine in the human digestive system?
o A) Absorb nutrients
o B) Store bile
o C) Absorb water and salts
o D) Digest proteins
7. What is the name of the molecule that carries genetic information in living organisms?
o A) RNA
o B) Enzyme
o C) DNA
o D) Protein
8. Which of the following is an example of an autotroph?
o A) Lion
o B) Mushroom
o C) Grass
o D) Rabbit
9. The genetic material in eukaryotic cells is located in the:
o A) Cytoplasm
o B) Nucleus
o C) Ribosomes
o D) Mitochondria
BIOLOGY NATIONAL ENTERANCE EXAM 500 QUESTIONS
1. What is the main function of the cell membrane?
A) Store genetic information
B) Control cell division
C) Protect and regulate the entry and exit of substances
D) Produce energy
2. Which part of the cell is responsible for producing energy?
A) Nucleus
B) Mitochondria
C) Endoplasmic reticulum
D) Ribosome
3. In humans, which blood cells are responsible for carrying oxygen?
A) White blood cells
B) Platelets
C) Red blood cells
D) Plasma
4. The process by which green plants make their own food is called:
A) Respiration
B) Transpiration
C) Photosynthesis
D) Digestion
5. Which organ in the human body is responsible for filtering blood?
o A) Liver
o B) Kidney
o C) Heart
o D) Lungs
6. What is the function of the large intestine in the human digestive system?
o A) Absorb nutrients
o B) Store bile
o C) Absorb water and salts
o D) Digest proteins
7. What is the name of the molecule that carries genetic information in living organisms?
o A) RNA
o B) Enzyme
o C) DNA
o D) Protein
8. Which of the following is an example of an autotroph?
o A) Lion
o B) Mushroom
o C) Grass
o D) Rabbit
9. The genetic material in eukaryotic cells is located in the:
o A) Cytoplasm
o B) Nucleus
o C) Ribosomes
o D) Mitochondria
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10. What is the primary function of the chloroplast in plant cells?
o A) Protein synthesis
o B) Respiration
o C) Photosynthesis
o D) DNA replication
11. Which type of blood vessel carries oxygenated blood away from the heart?
o A) Veins
o B) Arteries
o C) Capillaries
o D) Lymphatic vessels
12. Which part of the brain controls heart rate and breathing?
o A) Cerebrum
o B) Cerebellum
o C) Medulla oblongata
o D) Hypothalamus
13. What is the function of white blood cells in the human body?
o A) Carry oxygen
o B) Fight infections
o C) Aid in digestion
o D) Regulate body temperature
14. Which of the following is a characteristic of asexual reproduction?
o A) Requires two parents
o B) Offspring are genetically identical to the parent
o C) Involves the fusion of gametes
o D) Occurs only in plants
15. The process by which cells divide to form two identical daughter cells is called:
o A) Meiosis
o B) Mitosis
o C) Binary fission
o D) Apoptosis
16. Which of the following is an example of a lipid?
o A) Glucose
o B) Protein
o C) DNA
o D) Fat
17. What is the main function of the ribosomes in the cell?
o A) Synthesize proteins
o B) Store genetic information
o C) Transport materials
o D) Produce energy
18. Which of the following is a process in which plants lose water vapor through tiny
pores on their leaves?
o A) Photosynthesis
o B) Respiration
o C) Transpiration
o D) Germination
10. What is the primary function of the chloroplast in plant cells?
o A) Protein synthesis
o B) Respiration
o C) Photosynthesis
o D) DNA replication
11. Which type of blood vessel carries oxygenated blood away from the heart?
o A) Veins
o B) Arteries
o C) Capillaries
o D) Lymphatic vessels
12. Which part of the brain controls heart rate and breathing?
o A) Cerebrum
o B) Cerebellum
o C) Medulla oblongata
o D) Hypothalamus
13. What is the function of white blood cells in the human body?
o A) Carry oxygen
o B) Fight infections
o C) Aid in digestion
o D) Regulate body temperature
14. Which of the following is a characteristic of asexual reproduction?
o A) Requires two parents
o B) Offspring are genetically identical to the parent
o C) Involves the fusion of gametes
o D) Occurs only in plants
15. The process by which cells divide to form two identical daughter cells is called:
o A) Meiosis
o B) Mitosis
o C) Binary fission
o D) Apoptosis
16. Which of the following is an example of a lipid?
o A) Glucose
o B) Protein
o C) DNA
o D) Fat
17. What is the main function of the ribosomes in the cell?
o A) Synthesize proteins
o B) Store genetic information
o C) Transport materials
o D) Produce energy
18. Which of the following is a process in which plants lose water vapor through tiny
pores on their leaves?
o A) Photosynthesis
o B) Respiration
o C) Transpiration
o D) Germination
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19. Which of the following is a type of muscle tissue in the human body?
o A) Cardiac
o B) Nervous
o C) Epithelial
o D) Connective
20. What is the primary function of the lymphatic system?
o A) Circulate blood
o B) Absorb nutrients from the digestive system
o C) Transport oxygen to cells
o D) Defend the body against infection
Answers:
1. C) Protect and regulate the entry and exit of substances
2. B) Mitochondria
3. C) Red blood cells
4. C) Photosynthesis
5. B) Kidney
6. C) Absorb water and salts
7. C) DNA
8. C) Grass
9. B) Nucleus
10. C) Photosynthesis
11. B) Arteries
12. C) Medulla oblongata
13. B) Fight infections
14. B) Offspring are genetically identical to the parent
15. B) Mitosis
16. D) Fat
17. A) Synthesize proteins
18. C) Transpiration
19. A) Cardiac
20. D) Defend the body against infection
19. Which of the following is a type of muscle tissue in the human body?
o A) Cardiac
o B) Nervous
o C) Epithelial
o D) Connective
20. What is the primary function of the lymphatic system?
o A) Circulate blood
o B) Absorb nutrients from the digestive system
o C) Transport oxygen to cells
o D) Defend the body against infection
Answers:
1. C) Protect and regulate the entry and exit of substances
2. B) Mitochondria
3. C) Red blood cells
4. C) Photosynthesis
5. B) Kidney
6. C) Absorb water and salts
7. C) DNA
8. C) Grass
9. B) Nucleus
10. C) Photosynthesis
11. B) Arteries
12. C) Medulla oblongata
13. B) Fight infections
14. B) Offspring are genetically identical to the parent
15. B) Mitosis
16. D) Fat
17. A) Synthesize proteins
18. C) Transpiration
19. A) Cardiac
20. D) Defend the body against infection
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21. Which of the following organelles is responsible for the production of ribosomes?
• A) Mitochondria
• B) Nucleus
• C) Ribosomes
• D) Nucleolus
22. Which of the following is true about the process of osmosis?
• A) It requires energy to move molecules
• B) It is the movement of water from low to high concentration
• C) It is the movement of water from high to low concentration
• D) It involves the movement of solute molecules
23. The primary function of red blood cells is to:
• A) Defend against infection
• B) Transport oxygen
• C) Carry nutrients to cells
• D) Aid in digestion
24. Which of the following is NOT a function of proteins in the body?
• A) Enzyme catalysis
• B) Hormonal regulation
• C) Genetic material storage
• D) Transport of molecules
25. The process by which an organism maintains a stable internal environment is called:
• A) Metabolism
• B) Homeostasis
• C) Respiration
• D) Growth
26. The blood-brain barrier is a selective barrier that:
• A) Prevents white blood cells from entering the brain
• B) Allows all substances to pass through into the brain
• C) Prevents harmful substances from entering the brain
• D) Promotes the passage of oxygen and carbon dioxide
27. Which of the following are the building blocks of proteins?
• A) Sugars
• B) Fatty acids
• C) Amino acids
• D) Nucleotides
28. Which of the following is a function of the human digestive system?
• A) Absorb oxygen from the environment
• B) Break down food and absorb nutrients
• C) Remove waste products from the body
• D) Regulate body temperature
21. Which of the following organelles is responsible for the production of ribosomes?
• A) Mitochondria
• B) Nucleus
• C) Ribosomes
• D) Nucleolus
22. Which of the following is true about the process of osmosis?
• A) It requires energy to move molecules
• B) It is the movement of water from low to high concentration
• C) It is the movement of water from high to low concentration
• D) It involves the movement of solute molecules
23. The primary function of red blood cells is to:
• A) Defend against infection
• B) Transport oxygen
• C) Carry nutrients to cells
• D) Aid in digestion
24. Which of the following is NOT a function of proteins in the body?
• A) Enzyme catalysis
• B) Hormonal regulation
• C) Genetic material storage
• D) Transport of molecules
25. The process by which an organism maintains a stable internal environment is called:
• A) Metabolism
• B) Homeostasis
• C) Respiration
• D) Growth
26. The blood-brain barrier is a selective barrier that:
• A) Prevents white blood cells from entering the brain
• B) Allows all substances to pass through into the brain
• C) Prevents harmful substances from entering the brain
• D) Promotes the passage of oxygen and carbon dioxide
27. Which of the following are the building blocks of proteins?
• A) Sugars
• B) Fatty acids
• C) Amino acids
• D) Nucleotides
28. Which of the following is a function of the human digestive system?
• A) Absorb oxygen from the environment
• B) Break down food and absorb nutrients
• C) Remove waste products from the body
• D) Regulate body temperature
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29. What is the role of the mitochondria in a cell?
• A) Produce proteins
• B) Synthesize lipids
• C) Generate energy through cellular respiration
• D) Store genetic information
30. What type of immunity is provided by vaccines?
• A) Passive immunity
• B) Active immunity
• C) Innate immunity
• D) Natural immunity
31. Which of the following is responsible for the transport of water and minerals in
plants?
• A) Xylem
• B) Phloem
• C) Epidermis
• D) Cambium
32. The structure of DNA consists of:
• A) A single strand of nucleotides
• B) Two strands of nucleotides twisted into a double helix
• C) A single strand of proteins
• D) Multiple strands of amino acids
33. Which of the following structures is found only in plant cells?
• A) Mitochondria
• B) Chloroplast
• C) Ribosome
• D) Nucleus
34. What type of cell division results in the formation of two identical daughter cells?
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
35. The process by which the body breaks down food to absorb nutrients is known as:
• A) Respiration
• B) Digestion
• C) Excretion
• D) Transpiration
36. What type of bond holds the two strands of a DNA molecule together?
• A) Hydrogen bonds
• B) Ionic bonds
• C) Covalent bonds
• D) Metallic bonds
29. What is the role of the mitochondria in a cell?
• A) Produce proteins
• B) Synthesize lipids
• C) Generate energy through cellular respiration
• D) Store genetic information
30. What type of immunity is provided by vaccines?
• A) Passive immunity
• B) Active immunity
• C) Innate immunity
• D) Natural immunity
31. Which of the following is responsible for the transport of water and minerals in
plants?
• A) Xylem
• B) Phloem
• C) Epidermis
• D) Cambium
32. The structure of DNA consists of:
• A) A single strand of nucleotides
• B) Two strands of nucleotides twisted into a double helix
• C) A single strand of proteins
• D) Multiple strands of amino acids
33. Which of the following structures is found only in plant cells?
• A) Mitochondria
• B) Chloroplast
• C) Ribosome
• D) Nucleus
34. What type of cell division results in the formation of two identical daughter cells?
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
35. The process by which the body breaks down food to absorb nutrients is known as:
• A) Respiration
• B) Digestion
• C) Excretion
• D) Transpiration
36. What type of bond holds the two strands of a DNA molecule together?
• A) Hydrogen bonds
• B) Ionic bonds
• C) Covalent bonds
• D) Metallic bonds
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37. The process of photosynthesis takes place in which part of the plant cell?
• A) Mitochondria
• B) Chloroplast
• C) Nucleus
• D) Ribosome
38. Which of the following is true about asexual reproduction?
• A) It involves the fusion of gametes
• B) It produces offspring that are genetically identical to the parent
• C) It occurs only in animals
• D) It requires two parents
39. The process by which a cell takes in material from outside by engulfing it in a vesicle
is called:
• A) Osmosis
• B) Phagocytosis
• C) Diffusion
• D) Active transport
40. Which of the following is a characteristic of prokaryotic cells?
• A) They have a membrane-bound nucleus
• B) They have ribosomes
• C) They contain chloroplasts
• D) They have mitochondria
Answers:
21. D) Nucleolus
22. C) It is the movement of water from high to low concentration
23. B) Transport oxygen
24. C) Genetic material storage
25. B) Homeostasis
26. C) Prevents harmful substances from entering the brain
27. C) Amino acids
28. B) Break down food and absorb nutrients
29. C) Generate energy through cellular respiration
30. B) Active immunity
31. A) Xylem
32. B) Two strands of nucleotides twisted into a double helix
33. B) Chloroplast
37. The process of photosynthesis takes place in which part of the plant cell?
• A) Mitochondria
• B) Chloroplast
• C) Nucleus
• D) Ribosome
38. Which of the following is true about asexual reproduction?
• A) It involves the fusion of gametes
• B) It produces offspring that are genetically identical to the parent
• C) It occurs only in animals
• D) It requires two parents
39. The process by which a cell takes in material from outside by engulfing it in a vesicle
is called:
• A) Osmosis
• B) Phagocytosis
• C) Diffusion
• D) Active transport
40. Which of the following is a characteristic of prokaryotic cells?
• A) They have a membrane-bound nucleus
• B) They have ribosomes
• C) They contain chloroplasts
• D) They have mitochondria
Answers:
21. D) Nucleolus
22. C) It is the movement of water from high to low concentration
23. B) Transport oxygen
24. C) Genetic material storage
25. B) Homeostasis
26. C) Prevents harmful substances from entering the brain
27. C) Amino acids
28. B) Break down food and absorb nutrients
29. C) Generate energy through cellular respiration
30. B) Active immunity
31. A) Xylem
32. B) Two strands of nucleotides twisted into a double helix
33. B) Chloroplast
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34. A) Mitosis
35. B) Digestion
36. A) Hydrogen bonds
37. B) Chloroplast
38. B) It produces offspring that are genetically identical to the parent
39. B) Phagocytosis
40. B) They have ribosomes
41. Which of the following is responsible for carrying oxygen in the blood?
• A) Platelets
• B) White blood cells
• C) Red blood cells
• D) Plasma
42. The process by which an organism adapts to its environment over time is called:
A) Evolution
B) Reproduction
C) Adaptation
D) Homeostasis
43. The part of the plant that is responsible for the uptake of water and minerals is:
• A) Leaves
• B) Flowers
• C) Roots
• D) Stems
44. Which of the following is a function of the human circulatory system?
• A) Transport oxygen and nutrients
• B) Aid in digestion
• C) Produce enzymes
• D) Remove carbon dioxide from the body
45. What is the main function of the large intestine in the human digestive system?
• A) Absorb water and salts
• B) Digest proteins
• C) Store bile
• D) Absorb nutrients
46. Which type of bond holds amino acids together in a protein?
• A) Ionic bond
• B) Peptide bond
• C) Hydrogen bond
• D) Covalent bond
47. Which of the following is NOT a characteristic of living organisms?
• A) Growth
• B) Ability to move
• C) Ability to produce energy
• D) Ability to evolve
34. A) Mitosis
35. B) Digestion
36. A) Hydrogen bonds
37. B) Chloroplast
38. B) It produces offspring that are genetically identical to the parent
39. B) Phagocytosis
40. B) They have ribosomes
41. Which of the following is responsible for carrying oxygen in the blood?
• A) Platelets
• B) White blood cells
• C) Red blood cells
• D) Plasma
42. The process by which an organism adapts to its environment over time is called:
A) Evolution
B) Reproduction
C) Adaptation
D) Homeostasis
43. The part of the plant that is responsible for the uptake of water and minerals is:
• A) Leaves
• B) Flowers
• C) Roots
• D) Stems
44. Which of the following is a function of the human circulatory system?
• A) Transport oxygen and nutrients
• B) Aid in digestion
• C) Produce enzymes
• D) Remove carbon dioxide from the body
45. What is the main function of the large intestine in the human digestive system?
• A) Absorb water and salts
• B) Digest proteins
• C) Store bile
• D) Absorb nutrients
46. Which type of bond holds amino acids together in a protein?
• A) Ionic bond
• B) Peptide bond
• C) Hydrogen bond
• D) Covalent bond
47. Which of the following is NOT a characteristic of living organisms?
• A) Growth
• B) Ability to move
• C) Ability to produce energy
• D) Ability to evolve
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48. In the process of meiosis, how many daughter cells are produced?
• A) Two
• B) Four
• C) Eight
• D) One
49. Which of the following is a characteristic of all viruses?
• A) They have a nucleus
• B) They can reproduce on their own
• C) They are made of a protein coat and genetic material
• D) They are multicellular
50. Which part of the nervous system is responsible for controlling voluntary
movements?
• A) Autonomic nervous system
• B) Central nervous system
• C) Peripheral nervous system
• D) Somatic nervous system
51. Which of the following is NOT a function of the kidneys?
• A) Filter waste from the blood
• B) Regulate water balance
• C) Produce red blood cells
• D) Maintain electrolyte balance
52. The organ that secretes insulin in the human body is the:
• A) Liver
• B) Stomach
• C) Pancreas
• D) Kidney
53. The process by which a cell breaks down glucose to produce energy is called:
• A) Photosynthesis
• B) Respiration
• C) Fermentation
• D) Transpiration
54. Which of the following is the first step in the process of protein synthesis?
• A) Transcription
• B) Translation
• C) Replication
• D) Mutation
55. Which type of cell division is responsible for the formation of gametes?
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
56. The process of converting light energy into chemical energy in plants is called:
• A) Respiration
• B) Photosynthesis
• C) Transpiration
• D) Fermentation
48. In the process of meiosis, how many daughter cells are produced?
• A) Two
• B) Four
• C) Eight
• D) One
49. Which of the following is a characteristic of all viruses?
• A) They have a nucleus
• B) They can reproduce on their own
• C) They are made of a protein coat and genetic material
• D) They are multicellular
50. Which part of the nervous system is responsible for controlling voluntary
movements?
• A) Autonomic nervous system
• B) Central nervous system
• C) Peripheral nervous system
• D) Somatic nervous system
51. Which of the following is NOT a function of the kidneys?
• A) Filter waste from the blood
• B) Regulate water balance
• C) Produce red blood cells
• D) Maintain electrolyte balance
52. The organ that secretes insulin in the human body is the:
• A) Liver
• B) Stomach
• C) Pancreas
• D) Kidney
53. The process by which a cell breaks down glucose to produce energy is called:
• A) Photosynthesis
• B) Respiration
• C) Fermentation
• D) Transpiration
54. Which of the following is the first step in the process of protein synthesis?
• A) Transcription
• B) Translation
• C) Replication
• D) Mutation
55. Which type of cell division is responsible for the formation of gametes?
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
56. The process of converting light energy into chemical energy in plants is called:
• A) Respiration
• B) Photosynthesis
• C) Transpiration
• D) Fermentation
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57. Which of the following is an example of a prokaryotic organism?
• A) Human
• B) Plant
• C) Bacterium
• D) Fungi
58. Which organ system is responsible for transporting nutrients and oxygen to the body’s
cells?
• A) Nervous system
• B) Circulatory system
• C) Digestive system
• D) Muscular system
59. Which of the following best describes the term "biodiversity"?
• A) The number of species in an ecosystem
• B) The genetic variation within a species
• C) The variety of ecosystems in a region
• D) All of the above
60. Which of the following is true about mitosis?
• A) It produces four daughter cells
• B) It involves the division of the nucleus
• C) It is a type of sexual reproduction
• D) It only occurs in gametes
Answers:
41. C) Red blood cells
42. A) Evolution
43. C) Roots
44. A) Transport oxygen and nutrients
45. A) Absorb water and salts
46. B) Peptide bond
47. D) Ability to evolve
48. B) Four
49. C) They are made of a protein coat and genetic material
50. D) Somatic nervous system
51. C) Produce red blood cells
52. C) Pancreas
53. B) Respiration
57. Which of the following is an example of a prokaryotic organism?
• A) Human
• B) Plant
• C) Bacterium
• D) Fungi
58. Which organ system is responsible for transporting nutrients and oxygen to the body’s
cells?
• A) Nervous system
• B) Circulatory system
• C) Digestive system
• D) Muscular system
59. Which of the following best describes the term "biodiversity"?
• A) The number of species in an ecosystem
• B) The genetic variation within a species
• C) The variety of ecosystems in a region
• D) All of the above
60. Which of the following is true about mitosis?
• A) It produces four daughter cells
• B) It involves the division of the nucleus
• C) It is a type of sexual reproduction
• D) It only occurs in gametes
Answers:
41. C) Red blood cells
42. A) Evolution
43. C) Roots
44. A) Transport oxygen and nutrients
45. A) Absorb water and salts
46. B) Peptide bond
47. D) Ability to evolve
48. B) Four
49. C) They are made of a protein coat and genetic material
50. D) Somatic nervous system
51. C) Produce red blood cells
52. C) Pancreas
53. B) Respiration
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54. A) Transcription
55. B) Meiosis
56. B) Photosynthesis
57. C) Bacterium
58. B) Circulatory system
59. D) All of the above
60. B) It involves the division of the nucleus
61. Which of the following is the basic structural and functional unit of life?
• A) Atom
• B) Cell
• C) Tissue
• D) Organ
62. What is the primary role of the stomata in plant leaves?
• A) Transport water
• B) Absorb sunlight
• C) Exchange gases (CO2 and O2)
• D) Store glucose
63. Which of the following is the function of the white blood cells?
• A) Carry oxygen
• B) Aid in digestion
• C) Fight infections
• D) Clot blood
64. The process of converting glucose into energy in the presence of oxygen is known as:
• A) Photosynthesis
• B) Aerobic respiration
• C) Fermentation
• D) Anaerobic respiration
65. Which part of the cell is responsible for controlling what enters and leaves the cell?
• A) Mitochondria
• B) Nucleus
• C) Cell membrane
• D) Ribosome
66. What is the primary purpose of the process of transpiration in plants?
• A) Absorb water from the soil
• B) Release oxygen into the atmosphere
• C) Cool the plant
• D) Transport nutrients
67. In which organ of the human body does most nutrient absorption take place?
• A) Stomach
• B) Small intestine
• C) Large intestine
• D) Liver
54. A) Transcription
55. B) Meiosis
56. B) Photosynthesis
57. C) Bacterium
58. B) Circulatory system
59. D) All of the above
60. B) It involves the division of the nucleus
61. Which of the following is the basic structural and functional unit of life?
• A) Atom
• B) Cell
• C) Tissue
• D) Organ
62. What is the primary role of the stomata in plant leaves?
• A) Transport water
• B) Absorb sunlight
• C) Exchange gases (CO2 and O2)
• D) Store glucose
63. Which of the following is the function of the white blood cells?
• A) Carry oxygen
• B) Aid in digestion
• C) Fight infections
• D) Clot blood
64. The process of converting glucose into energy in the presence of oxygen is known as:
• A) Photosynthesis
• B) Aerobic respiration
• C) Fermentation
• D) Anaerobic respiration
65. Which part of the cell is responsible for controlling what enters and leaves the cell?
• A) Mitochondria
• B) Nucleus
• C) Cell membrane
• D) Ribosome
66. What is the primary purpose of the process of transpiration in plants?
• A) Absorb water from the soil
• B) Release oxygen into the atmosphere
• C) Cool the plant
• D) Transport nutrients
67. In which organ of the human body does most nutrient absorption take place?
• A) Stomach
• B) Small intestine
• C) Large intestine
• D) Liver
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68. What is the function of the ribosome in a cell?
• A) Store genetic information
• B) Produce energy
• C) Synthesize proteins
• D) Transport nutrients
69. The process by which a cell divides to form two identical daughter cells is called:
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
70. What is the role of chlorophyll in photosynthesis?
• A) Absorb light energy
• B) Produce oxygen
• C) Transport water
• D) Store glucose
71. Which of the following is a characteristic of a virus?
• A) It can reproduce on its own
• B) It has a cellular structure
• C) It requires a host cell to reproduce
• D) It is made of multiple cells
72. What is the genetic material found inside the nucleus of a cell?
• A) RNA
• B) Proteins
• C) DNA
• D) Lipids
73. What is the function of the spleen in the human body?
• A) Filter blood
• B) Produce insulin
• C) Regulate body temperature
• D) Aid in digestion
74. Which type of blood vessel carries oxygenated blood away from the heart?
• A) Veins
• B) Arteries
• C) Capillaries
• D) Lymphatic vessels
75. Which of the following organisms are capable of photosynthesis?
• A) Fungi
• B) Plants
• C) Animals
• D) Bacteria
76. What is the primary role of the gallbladder?
• A) Store bile
• B) Produce digestive enzymes
• C) Absorb nutrients
• D) Store glucose
68. What is the function of the ribosome in a cell?
• A) Store genetic information
• B) Produce energy
• C) Synthesize proteins
• D) Transport nutrients
69. The process by which a cell divides to form two identical daughter cells is called:
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
70. What is the role of chlorophyll in photosynthesis?
• A) Absorb light energy
• B) Produce oxygen
• C) Transport water
• D) Store glucose
71. Which of the following is a characteristic of a virus?
• A) It can reproduce on its own
• B) It has a cellular structure
• C) It requires a host cell to reproduce
• D) It is made of multiple cells
72. What is the genetic material found inside the nucleus of a cell?
• A) RNA
• B) Proteins
• C) DNA
• D) Lipids
73. What is the function of the spleen in the human body?
• A) Filter blood
• B) Produce insulin
• C) Regulate body temperature
• D) Aid in digestion
74. Which type of blood vessel carries oxygenated blood away from the heart?
• A) Veins
• B) Arteries
• C) Capillaries
• D) Lymphatic vessels
75. Which of the following organisms are capable of photosynthesis?
• A) Fungi
• B) Plants
• C) Animals
• D) Bacteria
76. What is the primary role of the gallbladder?
• A) Store bile
• B) Produce digestive enzymes
• C) Absorb nutrients
• D) Store glucose
12
77. What structure in plant cells is responsible for photosynthesis?
• A) Mitochondria
• B) Chloroplasts
• C) Ribosomes
• D) Endoplasmic reticulum
78. What type of organism is most likely to have a cell wall made of chitin?
• A) Bacteria
• B) Plants
• C) Fungi
• D) Animals
79. Which of the following is true about meiosis?
• A) It occurs in somatic cells
• B) It results in the formation of two genetically identical cells
• C) It reduces the chromosome number by half
• D) It only occurs in prokaryotes
80. The brain and spinal cord are part of which system in the human body?
• A) Respiratory system
• B) Nervous system
• C) Muscular system
• D) Circulatory system
Answers:
61. B) Cell
62. C) Exchange gases (CO2 and O2)
63. C) Fight infections
64. B) Aerobic respiration
65. C) Cell membrane
66. C) Cool the plant
67. B) Small intestine
68. C) Synthesize proteins
69. A) Mitosis
70. A) Absorb light energy
71. C) It requires a host cell to reproduce
72. C) DNA
73. A) Filter blood
74. B) Arteries
77. What structure in plant cells is responsible for photosynthesis?
• A) Mitochondria
• B) Chloroplasts
• C) Ribosomes
• D) Endoplasmic reticulum
78. What type of organism is most likely to have a cell wall made of chitin?
• A) Bacteria
• B) Plants
• C) Fungi
• D) Animals
79. Which of the following is true about meiosis?
• A) It occurs in somatic cells
• B) It results in the formation of two genetically identical cells
• C) It reduces the chromosome number by half
• D) It only occurs in prokaryotes
80. The brain and spinal cord are part of which system in the human body?
• A) Respiratory system
• B) Nervous system
• C) Muscular system
• D) Circulatory system
Answers:
61. B) Cell
62. C) Exchange gases (CO2 and O2)
63. C) Fight infections
64. B) Aerobic respiration
65. C) Cell membrane
66. C) Cool the plant
67. B) Small intestine
68. C) Synthesize proteins
69. A) Mitosis
70. A) Absorb light energy
71. C) It requires a host cell to reproduce
72. C) DNA
73. A) Filter blood
74. B) Arteries
13
75. B) Plants
76. A) Store bile
77. B) Chloroplasts
78. C) Fungi
79. C) It reduces the chromosome number by half
80. B) Nervous system
81. The ability of a cell to maintain a stable internal environment is called:
• A) Adaptation
• B) Metabolism
• C) Homeostasis
• D) Transpiration
82. Which of the following is true about sexual reproduction?
• A) It involves one parent
• B) It produces offspring that are genetically identical to the parent
• C) It requires the fusion of male and female gametes
• D) It occurs only in unicellular organisms
83. The process by which plants lose water vapor through their stomata is called:
• A) Transpiration
• B) Respiration
• C) Photosynthesis
• D) Germination
84. Which of the following is NOT a type of connective tissue?
• A) Blood
• B) Bone
• C) Skin
• D) Cartilage
85. In which part of the human body does the gas exchange of oxygen and carbon dioxide
occur?
• A) Stomach
• B) Small intestine
• C) Lungs
• D) Kidneys
86. Which of the following structures in the body carries oxygen-poor blood back to the
heart?
• A) Arteries
• B) Veins
• C) Capillaries
• D) Lymphatic vessels
75. B) Plants
76. A) Store bile
77. B) Chloroplasts
78. C) Fungi
79. C) It reduces the chromosome number by half
80. B) Nervous system
81. The ability of a cell to maintain a stable internal environment is called:
• A) Adaptation
• B) Metabolism
• C) Homeostasis
• D) Transpiration
82. Which of the following is true about sexual reproduction?
• A) It involves one parent
• B) It produces offspring that are genetically identical to the parent
• C) It requires the fusion of male and female gametes
• D) It occurs only in unicellular organisms
83. The process by which plants lose water vapor through their stomata is called:
• A) Transpiration
• B) Respiration
• C) Photosynthesis
• D) Germination
84. Which of the following is NOT a type of connective tissue?
• A) Blood
• B) Bone
• C) Skin
• D) Cartilage
85. In which part of the human body does the gas exchange of oxygen and carbon dioxide
occur?
• A) Stomach
• B) Small intestine
• C) Lungs
• D) Kidneys
86. Which of the following structures in the body carries oxygen-poor blood back to the
heart?
• A) Arteries
• B) Veins
• C) Capillaries
• D) Lymphatic vessels
14
87. The part of the brain responsible for regulating heart rate, breathing, and blood
pressure is the:
• A) Cerebrum
• B) Cerebellum
• C) Medulla oblongata
• D) Thalamus
88. The process by which plants take in carbon dioxide and release oxygen is called:
• A) Photosynthesis
• B) Respiration
• C) Transpiration
• D) Fermentation
89. Which of the following is true about anaerobic respiration?
• A) It occurs in the presence of oxygen
• B) It produces a large amount of energy
• C) It occurs in the absence of oxygen
• D) It is more efficient than aerobic respiration
90. Which part of the cell is responsible for packaging and modifying proteins?
• A) Golgi apparatus
• B) Mitochondria
• C) Nucleus
• D) Endoplasmic reticulum
91. What is the primary function of the human skeletal system?
• A) Produce energy
• B) Store nutrients
• C) Support and protect the body
• D) Transport oxygen
92. Which of the following is NOT part of the human respiratory system?
• A) Trachea
• B) Bronchi
• C) Lungs
• D) Liver
93. What is the main function of the human excretory system?
• A) To digest food
• B) To regulate body temperature
• C) To remove waste products from the body
• D) To circulate blood
94. What type of cell division results in the formation of four non-identical daughter cells
with half the chromosome number?
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
87. The part of the brain responsible for regulating heart rate, breathing, and blood
pressure is the:
• A) Cerebrum
• B) Cerebellum
• C) Medulla oblongata
• D) Thalamus
88. The process by which plants take in carbon dioxide and release oxygen is called:
• A) Photosynthesis
• B) Respiration
• C) Transpiration
• D) Fermentation
89. Which of the following is true about anaerobic respiration?
• A) It occurs in the presence of oxygen
• B) It produces a large amount of energy
• C) It occurs in the absence of oxygen
• D) It is more efficient than aerobic respiration
90. Which part of the cell is responsible for packaging and modifying proteins?
• A) Golgi apparatus
• B) Mitochondria
• C) Nucleus
• D) Endoplasmic reticulum
91. What is the primary function of the human skeletal system?
• A) Produce energy
• B) Store nutrients
• C) Support and protect the body
• D) Transport oxygen
92. Which of the following is NOT part of the human respiratory system?
• A) Trachea
• B) Bronchi
• C) Lungs
• D) Liver
93. What is the main function of the human excretory system?
• A) To digest food
• B) To regulate body temperature
• C) To remove waste products from the body
• D) To circulate blood
94. What type of cell division results in the formation of four non-identical daughter cells
with half the chromosome number?
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
15
95. Which of the following is an example of a lipid?
• A) Starch
• B) Protein
• C) DNA
• D) Fats
96. The part of the human eye responsible for controlling the amount of light that enters is
the:
• A) Retina
• B) Cornea
• C) Pupil
• D) Lens
97. The process of converting light energy into chemical energy in plants occurs in which
organelle?
• A) Mitochondria
• B) Ribosomes
• C) Chloroplasts
• D) Endoplasmic reticulum
98. Which of the following is NOT an organ in the human digestive system?
• A) Esophagus
• B) Stomach
• C) Pancreas
• D) Kidney
99. Which of the following is true about a food chain?
• A) It shows the flow of energy from top to bottom
• B) It starts with the primary consumers
• C) It represents the feeding relationship between organisms
• D) It involves only carnivores
100. Which of the following is NOT a function of the human liver?
• A) Produce bile
• B) Detoxify harmful substances
• C) Regulate blood sugar
• D) Store oxygen
Answers:
81. C) Homeostasis
82. C) It requires the fusion of male and female gametes
83. A) Transpiration
84. C) Skin
85. C) Lungs
86. B) Veins
95. Which of the following is an example of a lipid?
• A) Starch
• B) Protein
• C) DNA
• D) Fats
96. The part of the human eye responsible for controlling the amount of light that enters is
the:
• A) Retina
• B) Cornea
• C) Pupil
• D) Lens
97. The process of converting light energy into chemical energy in plants occurs in which
organelle?
• A) Mitochondria
• B) Ribosomes
• C) Chloroplasts
• D) Endoplasmic reticulum
98. Which of the following is NOT an organ in the human digestive system?
• A) Esophagus
• B) Stomach
• C) Pancreas
• D) Kidney
99. Which of the following is true about a food chain?
• A) It shows the flow of energy from top to bottom
• B) It starts with the primary consumers
• C) It represents the feeding relationship between organisms
• D) It involves only carnivores
100. Which of the following is NOT a function of the human liver?
• A) Produce bile
• B) Detoxify harmful substances
• C) Regulate blood sugar
• D) Store oxygen
Answers:
81. C) Homeostasis
82. C) It requires the fusion of male and female gametes
83. A) Transpiration
84. C) Skin
85. C) Lungs
86. B) Veins
16
87. C) Medulla oblongata
88. A) Photosynthesis
89. C) It occurs in the absence of oxygen
90. A) Golgi apparatus
91. C) Support and protect the body
92. D) Liver
93. C) To remove waste products from the body
94. B) Meiosis
95. D) Fats
96. C) Pupil
97. C) Chloroplasts
98. D) Kidney
99. C) It represents the feeding relationship between organisms
100. D) Store oxygen
101. Which of the following is an example of a plant cell organelle?
• A) Mitochondrion
• B) Ribosome
• C) Chloroplast
• D) Nucleus
102. What is the function of the mitochondria in the cell?
• A) To store energy
• B) To produce energy
• C) To carry out photosynthesis
• D) To divide the cell
103. Which of the following is part of the human digestive system?
• A) Liver
• B) Heart
• C) Kidney
• D) Brain
104. What type of organism carries out photosynthesis?
• A) Bacteria
• B) Plants
• C) Animals
• D) Fungi
105. Which of the following gases is taken in by plants during photosynthesis?
• A) Oxygen
• B) Nitrogen
• C) Carbon dioxide
• D) Hydrogen
87. C) Medulla oblongata
88. A) Photosynthesis
89. C) It occurs in the absence of oxygen
90. A) Golgi apparatus
91. C) Support and protect the body
92. D) Liver
93. C) To remove waste products from the body
94. B) Meiosis
95. D) Fats
96. C) Pupil
97. C) Chloroplasts
98. D) Kidney
99. C) It represents the feeding relationship between organisms
100. D) Store oxygen
101. Which of the following is an example of a plant cell organelle?
• A) Mitochondrion
• B) Ribosome
• C) Chloroplast
• D) Nucleus
102. What is the function of the mitochondria in the cell?
• A) To store energy
• B) To produce energy
• C) To carry out photosynthesis
• D) To divide the cell
103. Which of the following is part of the human digestive system?
• A) Liver
• B) Heart
• C) Kidney
• D) Brain
104. What type of organism carries out photosynthesis?
• A) Bacteria
• B) Plants
• C) Animals
• D) Fungi
105. Which of the following gases is taken in by plants during photosynthesis?
• A) Oxygen
• B) Nitrogen
• C) Carbon dioxide
• D) Hydrogen
17
106. The genetic material in the nucleus of a cell is made of:
• A) RNA
• B) DNA
• C) Proteins
• D) Carbohydrates
107. Which of the following structures is responsible for regulating the amount of water in
plant cells?
• A) Chloroplast
• B) Nucleus
• C) Vacuole
• D) Ribosome
108. Which of the following is a process by which cells obtain energy without using
oxygen?
• A) Aerobic respiration
• B) Photosynthesis
• C) Fermentation
• D) Transpiration
109. What is the function of red blood cells?
• A) To fight infection
• B) To transport oxygen
• C) To produce insulin
• D) To digest food
110. Which part of the brain is responsible for coordination and balance?
• A) Cerebellum
• B) Medulla oblongata
• C) Thalamus
• D) Cerebrum
111. Which of the following best describes the function of the smooth endoplasmic
reticulum (ER)?
• A) Synthesizes proteins
• B) Synthesizes lipids and detoxifies toxins
• C) Packages proteins for transport
• D) Stores calcium in muscle cells
112. In the human body, where is the largest proportion of water found?
• A) Lungs
• B) Brain
• C) Blood
• D) Cells
113. Which of the following is true about the role of enzymes in digestion?
• A) They act as catalysts to speed up the digestion process
• B) They absorb nutrients from digested food
• C) They store food for later use
• D) They physically break down food particles
106. The genetic material in the nucleus of a cell is made of:
• A) RNA
• B) DNA
• C) Proteins
• D) Carbohydrates
107. Which of the following structures is responsible for regulating the amount of water in
plant cells?
• A) Chloroplast
• B) Nucleus
• C) Vacuole
• D) Ribosome
108. Which of the following is a process by which cells obtain energy without using
oxygen?
• A) Aerobic respiration
• B) Photosynthesis
• C) Fermentation
• D) Transpiration
109. What is the function of red blood cells?
• A) To fight infection
• B) To transport oxygen
• C) To produce insulin
• D) To digest food
110. Which part of the brain is responsible for coordination and balance?
• A) Cerebellum
• B) Medulla oblongata
• C) Thalamus
• D) Cerebrum
111. Which of the following best describes the function of the smooth endoplasmic
reticulum (ER)?
• A) Synthesizes proteins
• B) Synthesizes lipids and detoxifies toxins
• C) Packages proteins for transport
• D) Stores calcium in muscle cells
112. In the human body, where is the largest proportion of water found?
• A) Lungs
• B) Brain
• C) Blood
• D) Cells
113. Which of the following is true about the role of enzymes in digestion?
• A) They act as catalysts to speed up the digestion process
• B) They absorb nutrients from digested food
• C) They store food for later use
• D) They physically break down food particles
18
114. Which of the following mechanisms helps prevent self-digestion in the human
stomach?
• A) The release of pepsinogen, which is activated in the acidic environment
• B) The production of a protective mucus layer
• C) The secretion of bile from the liver
• D) The absorption of nutrients by villi
115. During the process of DNA replication, which enzyme is responsible for unwinding
the DNA double helix?
• A) DNA ligase
• B) Helicase
• C) DNA polymerase
• D) RNA polymerase
Answers:
101. C) Chloroplast
102. B) To produce energy
103. A) Liver
104. B) Plants
105. C) Carbon dioxide
106. B) DNA
107. C) Vacuole
108. C) Fermentation
109. B) To transport oxygen
110. A) Cerebellum
111. B) Synthesizes lipids and detoxifies toxins
112. D) Cells
113. A) They act as catalysts to speed up the digestion process
114. B) The production of a protective mucus layer
115. B) Helicase
116. Which organelle is responsible for photosynthesis in plant cells?
• A) Mitochondria
• B) Chloroplast
• C) Ribosome
• D) Nucleus
114. Which of the following mechanisms helps prevent self-digestion in the human
stomach?
• A) The release of pepsinogen, which is activated in the acidic environment
• B) The production of a protective mucus layer
• C) The secretion of bile from the liver
• D) The absorption of nutrients by villi
115. During the process of DNA replication, which enzyme is responsible for unwinding
the DNA double helix?
• A) DNA ligase
• B) Helicase
• C) DNA polymerase
• D) RNA polymerase
Answers:
101. C) Chloroplast
102. B) To produce energy
103. A) Liver
104. B) Plants
105. C) Carbon dioxide
106. B) DNA
107. C) Vacuole
108. C) Fermentation
109. B) To transport oxygen
110. A) Cerebellum
111. B) Synthesizes lipids and detoxifies toxins
112. D) Cells
113. A) They act as catalysts to speed up the digestion process
114. B) The production of a protective mucus layer
115. B) Helicase
116. Which organelle is responsible for photosynthesis in plant cells?
• A) Mitochondria
• B) Chloroplast
• C) Ribosome
• D) Nucleus
19
117. What is the smallest unit of life?
• A) Tissue
• B) Organ
• C) Cell
• D) Molecule
118. Which type of blood vessel carries oxygen-rich blood away from the heart?
• A) Vein
• B) Capillary
• C) Artery
• D) Lymphatic vessel
119. The exchange of gases in the lungs occurs in which structure?
• A) Trachea
• B) Alveoli
• C) Bronchi
• D) Larynx
120. The function of the large intestine is mainly:
• A) Absorption of water
• B) Digestion of proteins
• C) Breaking down fats
• D) Producing bile
121. What is the powerhouse of the cell?
• A) Golgi apparatus
• B) Lysosome
• C) Nucleus
• D) Mitochondria
122. What is the main function of white blood cells?
• A) Transporting oxygen
• B) Fighting infections
• C) Clotting blood
• D) Carrying nutrients
123. Which of the following is an example of an excretory organ?
• A) Heart
• B) Liver
• C) Kidney
• D) Stomach
124. What is the role of insulin in the body?
• A) Increase blood pressure
• B) Break down proteins
• C) Regulate blood sugar levels
• D) Produce red blood cells
125. What is the structural and functional unit of the nervous system?
• A) Nephron
• B) Neuron
• C) Axon
• D) Dendrite
126. What is the primary component of the cell membrane?
• A) Proteins
• B) Carbohydrates
• C) Phospholipids
• D) Nucleic acids
117. What is the smallest unit of life?
• A) Tissue
• B) Organ
• C) Cell
• D) Molecule
118. Which type of blood vessel carries oxygen-rich blood away from the heart?
• A) Vein
• B) Capillary
• C) Artery
• D) Lymphatic vessel
119. The exchange of gases in the lungs occurs in which structure?
• A) Trachea
• B) Alveoli
• C) Bronchi
• D) Larynx
120. The function of the large intestine is mainly:
• A) Absorption of water
• B) Digestion of proteins
• C) Breaking down fats
• D) Producing bile
121. What is the powerhouse of the cell?
• A) Golgi apparatus
• B) Lysosome
• C) Nucleus
• D) Mitochondria
122. What is the main function of white blood cells?
• A) Transporting oxygen
• B) Fighting infections
• C) Clotting blood
• D) Carrying nutrients
123. Which of the following is an example of an excretory organ?
• A) Heart
• B) Liver
• C) Kidney
• D) Stomach
124. What is the role of insulin in the body?
• A) Increase blood pressure
• B) Break down proteins
• C) Regulate blood sugar levels
• D) Produce red blood cells
125. What is the structural and functional unit of the nervous system?
• A) Nephron
• B) Neuron
• C) Axon
• D) Dendrite
126. What is the primary component of the cell membrane?
• A) Proteins
• B) Carbohydrates
• C) Phospholipids
• D) Nucleic acids
20
127. Which organ produces bile?
• A) Stomach
• B) Pancreas
• C) Liver
• D) Small intestine
128. What is the major waste product removed by the kidneys?
• A) Oxygen
• B) Urea
• C) Glucose
• D) Carbon dioxide
129. What type of joint is found in the shoulder and hip?
• A) Hinge joint
• B) Pivot joint
• C) Ball-and-socket joint
• D) Gliding joint
130. Which of the following is NOT a function of the skeletal system?
• A) Protect internal organs
• B) Produce red blood cells
• C) Transport oxygen
• D) Support the body
131. What is the name of the process where water moves across a selectively permeable
membrane?
• A) Diffusion
• B) Osmosis
• C) Active transport
• D) Filtration
132. What part of the brain controls voluntary movements?
• A) Medulla oblongata
• B) Cerebrum
• C) Cerebellum
• D) Hypothalamus
133. Which vitamin is essential for blood clotting?
• A) Vitamin A
• B) Vitamin C
• C) Vitamin K
• D) Vitamin D
134. What is the process by which green plants make their own food?
• A) Respiration
• B) Transpiration
• C) Photosynthesis
• D) Fermentation
135. What is the name of the pigment that gives red blood cells their color and helps in
oxygen transport?
• A) Chlorophyll
• B) Hemoglobin
• C) Myoglobin
• D) Melanin
127. Which organ produces bile?
• A) Stomach
• B) Pancreas
• C) Liver
• D) Small intestine
128. What is the major waste product removed by the kidneys?
• A) Oxygen
• B) Urea
• C) Glucose
• D) Carbon dioxide
129. What type of joint is found in the shoulder and hip?
• A) Hinge joint
• B) Pivot joint
• C) Ball-and-socket joint
• D) Gliding joint
130. Which of the following is NOT a function of the skeletal system?
• A) Protect internal organs
• B) Produce red blood cells
• C) Transport oxygen
• D) Support the body
131. What is the name of the process where water moves across a selectively permeable
membrane?
• A) Diffusion
• B) Osmosis
• C) Active transport
• D) Filtration
132. What part of the brain controls voluntary movements?
• A) Medulla oblongata
• B) Cerebrum
• C) Cerebellum
• D) Hypothalamus
133. Which vitamin is essential for blood clotting?
• A) Vitamin A
• B) Vitamin C
• C) Vitamin K
• D) Vitamin D
134. What is the process by which green plants make their own food?
• A) Respiration
• B) Transpiration
• C) Photosynthesis
• D) Fermentation
135. What is the name of the pigment that gives red blood cells their color and helps in
oxygen transport?
• A) Chlorophyll
• B) Hemoglobin
• C) Myoglobin
• D) Melanin
21
Answers:
116. B) Chloroplast
117. C) Cell
118. C) Artery
119. B) Alveoli
120. A) Absorption of water
121. D) Mitochondria
122. B) Fighting infections
123. C) Kidney
124. C) Regulate blood sugar levels
125. B) Neuron
126. C) Phospholipids
127. C) Liver
128. B) Urea
129. C) Ball-and-socket joint
130. C) Transport oxygen
131. B) Osmosis
132. B) Cerebrum
133. C) Vitamin K
134. C) Photosynthesis
135. B) Hemoglobin
136. What is the basic structural and functional unit of the kidney?
• A) Nephron
• B) Alveolus
• C) Neuron
• D) Glomerulus
137. Which type of muscle is involuntary and found in the walls of internal organs?
• A) Skeletal muscle
• B) Cardiac muscle
• C) Smooth muscle
• D) Voluntary muscle
138. The process by which plants lose water vapor through small openings in their leaves
is called:
• A) Photosynthesis
• B) Respiration
• C) Transpiration
• D) Fermentation
Answers:
116. B) Chloroplast
117. C) Cell
118. C) Artery
119. B) Alveoli
120. A) Absorption of water
121. D) Mitochondria
122. B) Fighting infections
123. C) Kidney
124. C) Regulate blood sugar levels
125. B) Neuron
126. C) Phospholipids
127. C) Liver
128. B) Urea
129. C) Ball-and-socket joint
130. C) Transport oxygen
131. B) Osmosis
132. B) Cerebrum
133. C) Vitamin K
134. C) Photosynthesis
135. B) Hemoglobin
136. What is the basic structural and functional unit of the kidney?
• A) Nephron
• B) Alveolus
• C) Neuron
• D) Glomerulus
137. Which type of muscle is involuntary and found in the walls of internal organs?
• A) Skeletal muscle
• B) Cardiac muscle
• C) Smooth muscle
• D) Voluntary muscle
138. The process by which plants lose water vapor through small openings in their leaves
is called:
• A) Photosynthesis
• B) Respiration
• C) Transpiration
• D) Fermentation
22
139. What is the function of platelets in the blood?
• A) Transport oxygen
• B) Fight infections
• C) Aid in blood clotting
• D) Break down nutrients
140. Which of the following is a genetic disorder caused by an extra chromosome 21?
• A) Hemophilia
• B) Sickle cell anemia
• C) Down syndrome
• D) Cystic fibrosis
141. What type of reproduction involves only one parent and produces genetically identical
offspring?
• A) Asexual reproduction
• B) Sexual reproduction
• C) Fertilization
• D) Pollination
142. What is the main function of the pancreas in digestion?
• A) Produce bile
• B) Absorb nutrients
• C) Produce digestive enzymes
• D) Store vitamins
143. Which part of the human eye controls the amount of light entering the pupil?
• A) Retina
• B) Lens
• C) Cornea
• D) Iris
144. What is the main function of hemoglobin?
• A) Transport oxygen
• B) Fight infections
• C) Digest proteins
• D) Produce energy
145. Which of the following best describes mitosis?
• A) Division of sex cells
• B) Production of genetically identical cells
• C) Formation of gametes
• D) Reduction of chromosome number
146. What is the primary function of the large vacuole in plant cells?
• A) Store energy
• B) Store water and nutrients
• C) Conduct photosynthesis
• D) Produce proteins
147. Which of the following is NOT part of the respiratory system?
• A) Trachea
• B) Bronchi
• C) Esophagus
• D) Lungs
139. What is the function of platelets in the blood?
• A) Transport oxygen
• B) Fight infections
• C) Aid in blood clotting
• D) Break down nutrients
140. Which of the following is a genetic disorder caused by an extra chromosome 21?
• A) Hemophilia
• B) Sickle cell anemia
• C) Down syndrome
• D) Cystic fibrosis
141. What type of reproduction involves only one parent and produces genetically identical
offspring?
• A) Asexual reproduction
• B) Sexual reproduction
• C) Fertilization
• D) Pollination
142. What is the main function of the pancreas in digestion?
• A) Produce bile
• B) Absorb nutrients
• C) Produce digestive enzymes
• D) Store vitamins
143. Which part of the human eye controls the amount of light entering the pupil?
• A) Retina
• B) Lens
• C) Cornea
• D) Iris
144. What is the main function of hemoglobin?
• A) Transport oxygen
• B) Fight infections
• C) Digest proteins
• D) Produce energy
145. Which of the following best describes mitosis?
• A) Division of sex cells
• B) Production of genetically identical cells
• C) Formation of gametes
• D) Reduction of chromosome number
146. What is the primary function of the large vacuole in plant cells?
• A) Store energy
• B) Store water and nutrients
• C) Conduct photosynthesis
• D) Produce proteins
147. Which of the following is NOT part of the respiratory system?
• A) Trachea
• B) Bronchi
• C) Esophagus
• D) Lungs
23
148. The part of the female reproductive system where fertilization occurs is the:
• A) Uterus
• B) Ovary
• C) Fallopian tube
• D) Cervix
149. Which hormone regulates metabolism and is produced by the thyroid gland?
• A) Insulin
• B) Estrogen
• C) Thyroxine
• D) Adrenaline
150. Which process occurs in the mitochondria and provides energy for the cell?
• A) Photosynthesis
• B) Cellular respiration
• C) Protein synthesis
• D) Osmosis
Answers:
136. A) Nephron
137. C) Smooth muscle
138. C) Transpiration
139. C) Aid in blood clotting
140. C) Down syndrome
141. A) Asexual reproduction
142. C) Produce digestive enzymes
143. D) Iris
144. A) Transport oxygen
145. B) Production of genetically identical cells
146. B) Store water and nutrients
147. C) Esophagus
148. C) Fallopian tube
149. C) Thyroxine
150. B) Cellular respiration
151. What is the main function of ribosomes in a cell?
• A) Energy production
• B) Protein synthesis
• C) DNA replication
• D) Cell division
148. The part of the female reproductive system where fertilization occurs is the:
• A) Uterus
• B) Ovary
• C) Fallopian tube
• D) Cervix
149. Which hormone regulates metabolism and is produced by the thyroid gland?
• A) Insulin
• B) Estrogen
• C) Thyroxine
• D) Adrenaline
150. Which process occurs in the mitochondria and provides energy for the cell?
• A) Photosynthesis
• B) Cellular respiration
• C) Protein synthesis
• D) Osmosis
Answers:
136. A) Nephron
137. C) Smooth muscle
138. C) Transpiration
139. C) Aid in blood clotting
140. C) Down syndrome
141. A) Asexual reproduction
142. C) Produce digestive enzymes
143. D) Iris
144. A) Transport oxygen
145. B) Production of genetically identical cells
146. B) Store water and nutrients
147. C) Esophagus
148. C) Fallopian tube
149. C) Thyroxine
150. B) Cellular respiration
151. What is the main function of ribosomes in a cell?
• A) Energy production
• B) Protein synthesis
• C) DNA replication
• D) Cell division
24
152. Which of the following is a characteristic of all living organisms?
• A) Ability to move
• B) Production of oxygen
• C) Response to stimuli
• D) Presence of a backbone
153. The process by which plants convert sunlight into chemical energy is called:
• A) Fermentation
• B) Photosynthesis
• C) Respiration
• D) Transpiration
154. Which component of blood is responsible for transporting oxygen?
• A) Plasma
• B) White blood cells
• C) Red blood cells
• D) Platelets
155. What is the primary function of the small intestine?
• A) Absorption of nutrients
• B) Storage of waste
• C) Breakdown of fats
• D) Water absorption
156. Which of the following is a function of the liver?
• A) Production of insulin
• B) Detoxification of harmful substances
• C) Production of red blood cells
• D) Absorption of nutrients
157. What type of biomolecule are enzymes?
• A) Carbohydrates
• B) Proteins
• C) Lipids
• D) Nucleic acids
158. Which of the following is NOT a function of the skeletal system?
• A) Support and structure
• B) Blood cell production
• C) Hormone production
• D) Protection of organs
159. What is the term for organisms that make their own food?
• A) Heterotrophs
• B) Autotrophs
• C) Decomposers
• D) Carnivores
160. What is the name of the fluid that surrounds and protects the brain and spinal cord?
• A) Synovial fluid
• B) Lymph
• C) Cerebrospinal fluid
• D) Plasma
152. Which of the following is a characteristic of all living organisms?
• A) Ability to move
• B) Production of oxygen
• C) Response to stimuli
• D) Presence of a backbone
153. The process by which plants convert sunlight into chemical energy is called:
• A) Fermentation
• B) Photosynthesis
• C) Respiration
• D) Transpiration
154. Which component of blood is responsible for transporting oxygen?
• A) Plasma
• B) White blood cells
• C) Red blood cells
• D) Platelets
155. What is the primary function of the small intestine?
• A) Absorption of nutrients
• B) Storage of waste
• C) Breakdown of fats
• D) Water absorption
156. Which of the following is a function of the liver?
• A) Production of insulin
• B) Detoxification of harmful substances
• C) Production of red blood cells
• D) Absorption of nutrients
157. What type of biomolecule are enzymes?
• A) Carbohydrates
• B) Proteins
• C) Lipids
• D) Nucleic acids
158. Which of the following is NOT a function of the skeletal system?
• A) Support and structure
• B) Blood cell production
• C) Hormone production
• D) Protection of organs
159. What is the term for organisms that make their own food?
• A) Heterotrophs
• B) Autotrophs
• C) Decomposers
• D) Carnivores
160. What is the name of the fluid that surrounds and protects the brain and spinal cord?
• A) Synovial fluid
• B) Lymph
• C) Cerebrospinal fluid
• D) Plasma
25
161. In genetics, what is the term for an organism’s observable traits?
• A) Genotype
• B) Phenotype
• C) Allele
• D) Chromosome
162. Which part of the plant is responsible for absorbing water and minerals from the soil?
• A) Stem
• B) Leaves
• C) Roots
• D) Flowers
163. Which process results in the production of gametes (sperm and egg cells)?
• A) Mitosis
• B) Binary fission
• C) Meiosis
• D) Budding
164. What is the main function of chlorophyll in plants?
• A) Absorb sunlight for photosynthesis
• B) Transport water through the plant
• C) Store food
• D) Provide structural support
165. Which of the following best describes a dominant allele?
• A) An allele that is always expressed when present
• B) An allele that is only expressed in homozygous individuals
• C) An allele that is never expressed
• D) An allele that determines blood type
Answers:
151. B) Protein synthesis
152. C) Response to stimuli
153. B) Photosynthesis
154. C) Red blood cells
155. A) Absorption of nutrients
156. B) Detoxification of harmful substances
157. B) Proteins
158. C) Hormone production
159. B) Autotrophs
161. In genetics, what is the term for an organism’s observable traits?
• A) Genotype
• B) Phenotype
• C) Allele
• D) Chromosome
162. Which part of the plant is responsible for absorbing water and minerals from the soil?
• A) Stem
• B) Leaves
• C) Roots
• D) Flowers
163. Which process results in the production of gametes (sperm and egg cells)?
• A) Mitosis
• B) Binary fission
• C) Meiosis
• D) Budding
164. What is the main function of chlorophyll in plants?
• A) Absorb sunlight for photosynthesis
• B) Transport water through the plant
• C) Store food
• D) Provide structural support
165. Which of the following best describes a dominant allele?
• A) An allele that is always expressed when present
• B) An allele that is only expressed in homozygous individuals
• C) An allele that is never expressed
• D) An allele that determines blood type
Answers:
151. B) Protein synthesis
152. C) Response to stimuli
153. B) Photosynthesis
154. C) Red blood cells
155. A) Absorption of nutrients
156. B) Detoxification of harmful substances
157. B) Proteins
158. C) Hormone production
159. B) Autotrophs
26
160. C) Cerebrospinal fluid
161. B) Phenotype
162. C) Roots
163. C) Meiosis
164. A) Absorb sunlight for photosynthesis
165. A) An allele that is always expressed when present
166. What is the role of DNA in a cell?
• A) Producing energy
• B) Storing genetic information
• C) Transporting oxygen
• D) Digesting food
167. Which part of the brain controls balance and coordination?
• A) Cerebrum
• B) Medulla oblongata
• C) Cerebellum
• D) Hypothalamus
168. Which of the following is an example of a prokaryotic organism?
• A) Human
• B) Bacteria
• C) Fungi
• D) Algae
169. What is the main function of the mitochondria?
• A) Protein synthesis
• B) Cellular respiration
• C) Storing water
• D) Digesting waste
170. Which type of joint is found in the knee and elbow?
• A) Ball-and-socket
• B) Hinge
• C) Pivot
• D) Gliding
171. Which part of the heart pumps oxygenated blood to the body?
• A) Right atrium
• B) Left atrium
• C) Right ventricle
• D) Left ventricle
172. What is the function of hemoglobin?
• A) Transport carbon dioxide
• B) Transport oxygen
• C) Help in blood clotting
• D) Digest food
173. Which process describes the movement of molecules from an area of high
concentration to an area of low concentration?
• A) Osmosis
• B) Diffusion
• C) Active transport
• D) Filtration
160. C) Cerebrospinal fluid
161. B) Phenotype
162. C) Roots
163. C) Meiosis
164. A) Absorb sunlight for photosynthesis
165. A) An allele that is always expressed when present
166. What is the role of DNA in a cell?
• A) Producing energy
• B) Storing genetic information
• C) Transporting oxygen
• D) Digesting food
167. Which part of the brain controls balance and coordination?
• A) Cerebrum
• B) Medulla oblongata
• C) Cerebellum
• D) Hypothalamus
168. Which of the following is an example of a prokaryotic organism?
• A) Human
• B) Bacteria
• C) Fungi
• D) Algae
169. What is the main function of the mitochondria?
• A) Protein synthesis
• B) Cellular respiration
• C) Storing water
• D) Digesting waste
170. Which type of joint is found in the knee and elbow?
• A) Ball-and-socket
• B) Hinge
• C) Pivot
• D) Gliding
171. Which part of the heart pumps oxygenated blood to the body?
• A) Right atrium
• B) Left atrium
• C) Right ventricle
• D) Left ventricle
172. What is the function of hemoglobin?
• A) Transport carbon dioxide
• B) Transport oxygen
• C) Help in blood clotting
• D) Digest food
173. Which process describes the movement of molecules from an area of high
concentration to an area of low concentration?
• A) Osmosis
• B) Diffusion
• C) Active transport
• D) Filtration
27
174. What is the name of the process where an egg and sperm fuse to form a zygote?
• A) Mitosis
• B) Meiosis
• C) Fertilization
• D) Cloning
175. Which of the following is NOT a function of the circulatory system?
• A) Transporting nutrients
• B) Producing hormones
• C) Regulating body temperature
• D) Removing waste
176. What is the primary function of red blood cells?
• A) Fight infections
• B) Transport oxygen
• C) Aid digestion
• D) Produce hormones
177. Which of the following carries deoxygenated blood to the lungs?
• A) Aorta
• B) Pulmonary vein
• C) Pulmonary artery
• D) Vena cava
178. The movement of water across a selectively permeable membrane is called:
• A) Diffusion
• B) Osmosis
• C) Active transport
• D) Endocytosis
179. What is the name of the process by which plants release oxygen?
• A) Transpiration
• B) Respiration
• C) Photosynthesis
• D) Fermentation
180. Which gland produces insulin?
• A) Thyroid
• B) Pancreas
• C) Adrenal
• D) Pituitary
Answers:
166. B) Storing genetic information
167. C) Cerebellum
168. B) Bacteria
169. B) Cellular respiration
170. B) Hinge
171. D) Left ventricle
172. B) Transport oxygen
174. What is the name of the process where an egg and sperm fuse to form a zygote?
• A) Mitosis
• B) Meiosis
• C) Fertilization
• D) Cloning
175. Which of the following is NOT a function of the circulatory system?
• A) Transporting nutrients
• B) Producing hormones
• C) Regulating body temperature
• D) Removing waste
176. What is the primary function of red blood cells?
• A) Fight infections
• B) Transport oxygen
• C) Aid digestion
• D) Produce hormones
177. Which of the following carries deoxygenated blood to the lungs?
• A) Aorta
• B) Pulmonary vein
• C) Pulmonary artery
• D) Vena cava
178. The movement of water across a selectively permeable membrane is called:
• A) Diffusion
• B) Osmosis
• C) Active transport
• D) Endocytosis
179. What is the name of the process by which plants release oxygen?
• A) Transpiration
• B) Respiration
• C) Photosynthesis
• D) Fermentation
180. Which gland produces insulin?
• A) Thyroid
• B) Pancreas
• C) Adrenal
• D) Pituitary
Answers:
166. B) Storing genetic information
167. C) Cerebellum
168. B) Bacteria
169. B) Cellular respiration
170. B) Hinge
171. D) Left ventricle
172. B) Transport oxygen
28
173. B) Diffusion
174. C) Fertilization
175. B) Producing hormones
176. B) Transport oxygen
177. C) Pulmonary artery
178. B) Osmosis
179. C) Photosynthesis
180. B) Pancreas
181. Which organ is primarily responsible for filtering waste from the blood?
• A) Liver
• B) Kidney
• C) Lungs
• D) Heart
182. What type of biomolecule are DNA and RNA?
• A) Proteins
• B) Lipids
• C) Carbohydrates
• D) Nucleic acids
183. Which part of a neuron transmits electrical signals away from the cell body?
• A) Dendrites
• B) Axon
• C) Synapse
• D) Myelin sheath
184. What is the term for the genetic makeup of an organism?
• A) Phenotype
• B) Genotype
• C) Allele
• D) Chromosome
185. Which gas is a byproduct of photosynthesis?
• A) Oxygen
• B) Carbon dioxide
• C) Nitrogen
• D) Hydrogen
186. What is the function of the large intestine?
• A) Absorb nutrients
• B) Produce bile
• C) Absorb water and form feces
• D) Break down proteins
187. Which component of the blood fights infections?
• A) Red blood cells
• B) White blood cells
• C) Platelets
• D) Plasma
173. B) Diffusion
174. C) Fertilization
175. B) Producing hormones
176. B) Transport oxygen
177. C) Pulmonary artery
178. B) Osmosis
179. C) Photosynthesis
180. B) Pancreas
181. Which organ is primarily responsible for filtering waste from the blood?
• A) Liver
• B) Kidney
• C) Lungs
• D) Heart
182. What type of biomolecule are DNA and RNA?
• A) Proteins
• B) Lipids
• C) Carbohydrates
• D) Nucleic acids
183. Which part of a neuron transmits electrical signals away from the cell body?
• A) Dendrites
• B) Axon
• C) Synapse
• D) Myelin sheath
184. What is the term for the genetic makeup of an organism?
• A) Phenotype
• B) Genotype
• C) Allele
• D) Chromosome
185. Which gas is a byproduct of photosynthesis?
• A) Oxygen
• B) Carbon dioxide
• C) Nitrogen
• D) Hydrogen
186. What is the function of the large intestine?
• A) Absorb nutrients
• B) Produce bile
• C) Absorb water and form feces
• D) Break down proteins
187. Which component of the blood fights infections?
• A) Red blood cells
• B) White blood cells
• C) Platelets
• D) Plasma
29
188. The main function of the autonomic nervous system is to:
• A) Control voluntary muscle movements
• B) Regulate involuntary body functions
• C) Process sensory information
• D) Produce hormones
189. Which type of reproduction leads to more genetic variation?
• A) Asexual reproduction
• B) Sexual reproduction
• C) Binary fission
• D) Budding
190. What is the site of protein synthesis in the cell?
• A) Mitochondria
• B) Ribosome
• C) Golgi apparatus
• D) Nucleus
191. Which structure in plant cells stores water and provides support?
• A) Chloroplast
• B) Mitochondria
• C) Central vacuole
• D) Cell membrane
192. Which hormone regulates blood sugar levels?
• A) Adrenaline
• B) Thyroxine
• C) Insulin
• D) Estrogen
193. What is the role of messenger RNA (mRNA)?
• A) Carry amino acids to ribosomes
• B) Transmit genetic information from DNA to ribosomes
• C) Replicate DNA
• D) Store genetic information
194. Which of the following is NOT an example of a vertebrate?
• A) Frog
• B) Shark
• C) Jellyfish
• D) Eagle
195. What is the powerhouse of the cell?
• A) Nucleus
• B) Ribosome
• C) Mitochondria
• D) Lysosome
188. The main function of the autonomic nervous system is to:
• A) Control voluntary muscle movements
• B) Regulate involuntary body functions
• C) Process sensory information
• D) Produce hormones
189. Which type of reproduction leads to more genetic variation?
• A) Asexual reproduction
• B) Sexual reproduction
• C) Binary fission
• D) Budding
190. What is the site of protein synthesis in the cell?
• A) Mitochondria
• B) Ribosome
• C) Golgi apparatus
• D) Nucleus
191. Which structure in plant cells stores water and provides support?
• A) Chloroplast
• B) Mitochondria
• C) Central vacuole
• D) Cell membrane
192. Which hormone regulates blood sugar levels?
• A) Adrenaline
• B) Thyroxine
• C) Insulin
• D) Estrogen
193. What is the role of messenger RNA (mRNA)?
• A) Carry amino acids to ribosomes
• B) Transmit genetic information from DNA to ribosomes
• C) Replicate DNA
• D) Store genetic information
194. Which of the following is NOT an example of a vertebrate?
• A) Frog
• B) Shark
• C) Jellyfish
• D) Eagle
195. What is the powerhouse of the cell?
• A) Nucleus
• B) Ribosome
• C) Mitochondria
• D) Lysosome
30
196. The process by which organisms maintain a stable internal environment is called:
• A) Photosynthesis
• B) Homeostasis
• C) Metabolism
• D) Respiration
197. Which type of blood vessel carries blood away from the heart?
• A) Vein
• B) Artery
• C) Capillary
• D) Venule
198. What is the function of the stomata in plants?
• A) Transport nutrients
• B) Exchange gases
• C) Store water
• D) Support the stem
199. What organelle is responsible for packaging and transporting proteins?
• A) Ribosome
• B) Golgi apparatus
• C) Endoplasmic reticulum
• D) Mitochondria
200. Which of the following is an example of a decomposer?
• A) Oak tree
• B) Mushroom
• C) Tiger
• D) Elephant
Answers:
181. B) Kidney
182. D) Nucleic acids
183. B) Axon
184. B) Genotype
185. A) Oxygen
186. C) Absorb water and form feces
187. B) White blood cells
188. B) Regulate involuntary body functions
189. B) Sexual reproduction
190. B) Ribosome
191. C) Central vacuole
192. C) Insulin
193. B) Transmit genetic information from DNA to ribosomes
196. The process by which organisms maintain a stable internal environment is called:
• A) Photosynthesis
• B) Homeostasis
• C) Metabolism
• D) Respiration
197. Which type of blood vessel carries blood away from the heart?
• A) Vein
• B) Artery
• C) Capillary
• D) Venule
198. What is the function of the stomata in plants?
• A) Transport nutrients
• B) Exchange gases
• C) Store water
• D) Support the stem
199. What organelle is responsible for packaging and transporting proteins?
• A) Ribosome
• B) Golgi apparatus
• C) Endoplasmic reticulum
• D) Mitochondria
200. Which of the following is an example of a decomposer?
• A) Oak tree
• B) Mushroom
• C) Tiger
• D) Elephant
Answers:
181. B) Kidney
182. D) Nucleic acids
183. B) Axon
184. B) Genotype
185. A) Oxygen
186. C) Absorb water and form feces
187. B) White blood cells
188. B) Regulate involuntary body functions
189. B) Sexual reproduction
190. B) Ribosome
191. C) Central vacuole
192. C) Insulin
193. B) Transmit genetic information from DNA to ribosomes
31
194. C) Jellyfish
195. C) Mitochondria
196. B) Homeostasis
197. B) Artery
198. B) Exchange gases
199. B) Golgi apparatus
200. B) Mushroom
201. What is the primary function of the cell membrane?
• A) Generate energy
• B) Store genetic material
• C) Control movement of substances in and out of the cell
• D) Produce proteins
202. Which of the following is a structural carbohydrate found in plant cell walls?
• A) Starch
• B) Glycogen
• C) Cellulose
• D) Chitin
203. What is the function of platelets in the blood?
• A) Transport oxygen
• B) Fight infections
• C) Aid in blood clotting
• D) Carry hormones
204. Which type of muscle is involuntary and found in the walls of internal organs?
• A) Skeletal muscle
• B) Smooth muscle
• C) Cardiac muscle
• D) Voluntary muscle
205. What is the primary site of photosynthesis in plant cells?
• A) Mitochondria
• B) Ribosome
• C) Chloroplast
• D) Nucleus
206. Which process helps maintain water balance in fish living in freshwater
environments?
• A) Exocytosis
• B) Osmoregulation
• C) Diffusion
• D) Active transport
207. Which nitrogenous base is found in RNA but not in DNA?
• A) Adenine
• B) Thymine
• C) Uracil
• D) Cytosine
194. C) Jellyfish
195. C) Mitochondria
196. B) Homeostasis
197. B) Artery
198. B) Exchange gases
199. B) Golgi apparatus
200. B) Mushroom
201. What is the primary function of the cell membrane?
• A) Generate energy
• B) Store genetic material
• C) Control movement of substances in and out of the cell
• D) Produce proteins
202. Which of the following is a structural carbohydrate found in plant cell walls?
• A) Starch
• B) Glycogen
• C) Cellulose
• D) Chitin
203. What is the function of platelets in the blood?
• A) Transport oxygen
• B) Fight infections
• C) Aid in blood clotting
• D) Carry hormones
204. Which type of muscle is involuntary and found in the walls of internal organs?
• A) Skeletal muscle
• B) Smooth muscle
• C) Cardiac muscle
• D) Voluntary muscle
205. What is the primary site of photosynthesis in plant cells?
• A) Mitochondria
• B) Ribosome
• C) Chloroplast
• D) Nucleus
206. Which process helps maintain water balance in fish living in freshwater
environments?
• A) Exocytosis
• B) Osmoregulation
• C) Diffusion
• D) Active transport
207. Which nitrogenous base is found in RNA but not in DNA?
• A) Adenine
• B) Thymine
• C) Uracil
• D) Cytosine
32
208. What part of the human brain controls basic life functions such as breathing and heart
rate?
• A) Cerebrum
• B) Cerebellum
• C) Medulla oblongata
• D) Hypothalamus
209. Which biomolecule serves as the primary source of energy for cells?
• A) Proteins
• B) Carbohydrates
• C) Lipids
• D) Nucleic acids
210. What type of symbiotic relationship benefits both organisms involved?
• A) Commensalism
• B) Parasitism
• C) Mutualism
• D) Predation
211. Which organ is responsible for producing bile?
• A) Stomach
• B) Liver
• C) Pancreas
• D) Gallbladder
212. What is the main role of the kidney in the human body?
• A) Store glucose
• B) Filter waste from blood
• C) Digest fats
• D) Produce red blood cells
213. The region of DNA that codes for a specific protein is called:
• A) Gene
• B) Chromosome
• C) Nucleotide
• D) Ribosome
214. Which of the following is an example of an abiotic factor in an ecosystem?
• A) Plants
• B) Soil pH
• C) Herbivores
• D) Decomposers
215. What is the main function of tRNA in protein synthesis?
• A) Carry genetic code from DNA
• B) Transport amino acids to ribosomes
• C) Form ribosomes
• D) Store genetic information
216. Which organ system is responsible for transporting oxygen and nutrients throughout
the body?
• A) Digestive system
• B) Respiratory system
• C) Circulatory system
• D) Nervous system
208. What part of the human brain controls basic life functions such as breathing and heart
rate?
• A) Cerebrum
• B) Cerebellum
• C) Medulla oblongata
• D) Hypothalamus
209. Which biomolecule serves as the primary source of energy for cells?
• A) Proteins
• B) Carbohydrates
• C) Lipids
• D) Nucleic acids
210. What type of symbiotic relationship benefits both organisms involved?
• A) Commensalism
• B) Parasitism
• C) Mutualism
• D) Predation
211. Which organ is responsible for producing bile?
• A) Stomach
• B) Liver
• C) Pancreas
• D) Gallbladder
212. What is the main role of the kidney in the human body?
• A) Store glucose
• B) Filter waste from blood
• C) Digest fats
• D) Produce red blood cells
213. The region of DNA that codes for a specific protein is called:
• A) Gene
• B) Chromosome
• C) Nucleotide
• D) Ribosome
214. Which of the following is an example of an abiotic factor in an ecosystem?
• A) Plants
• B) Soil pH
• C) Herbivores
• D) Decomposers
215. What is the main function of tRNA in protein synthesis?
• A) Carry genetic code from DNA
• B) Transport amino acids to ribosomes
• C) Form ribosomes
• D) Store genetic information
216. Which organ system is responsible for transporting oxygen and nutrients throughout
the body?
• A) Digestive system
• B) Respiratory system
• C) Circulatory system
• D) Nervous system
33
217. What type of organism breaks down dead organic matter in an ecosystem?
• A) Producer
• B) Consumer
• C) Decomposer
• D) Herbivore
218. In genetics, a heterozygous individual has:
• A) Two dominant alleles
• B) Two recessive alleles
• C) One dominant and one recessive allele
• D) No alleles
219. Which process releases energy by breaking down glucose in the absence of oxygen?
• A) Photosynthesis
• B) Aerobic respiration
• C) Fermentation
• D) Protein synthesis
220. Which part of a plant transports water from the roots to the leaves?
• A) Phloem
• B) Xylem
• C) Stomata
• D) Chloroplast
Answers:
201. C) Control movement of substances in and out of the cell
202. C) Cellulose
203. C) Aid in blood clotting
204. B) Smooth muscle
205. C) Chloroplast
206. B) Osmoregulation
207. C) Uracil
208. C) Medulla oblongata
209. B) Carbohydrates
210. C) Mutualism
211. B) Liver
212. B) Filter waste from blood
213. A) Gene
214. B) Soil pH
217. What type of organism breaks down dead organic matter in an ecosystem?
• A) Producer
• B) Consumer
• C) Decomposer
• D) Herbivore
218. In genetics, a heterozygous individual has:
• A) Two dominant alleles
• B) Two recessive alleles
• C) One dominant and one recessive allele
• D) No alleles
219. Which process releases energy by breaking down glucose in the absence of oxygen?
• A) Photosynthesis
• B) Aerobic respiration
• C) Fermentation
• D) Protein synthesis
220. Which part of a plant transports water from the roots to the leaves?
• A) Phloem
• B) Xylem
• C) Stomata
• D) Chloroplast
Answers:
201. C) Control movement of substances in and out of the cell
202. C) Cellulose
203. C) Aid in blood clotting
204. B) Smooth muscle
205. C) Chloroplast
206. B) Osmoregulation
207. C) Uracil
208. C) Medulla oblongata
209. B) Carbohydrates
210. C) Mutualism
211. B) Liver
212. B) Filter waste from blood
213. A) Gene
214. B) Soil pH
34
215. B) Transport amino acids to ribosomes
216. C) Circulatory system
217. C) Decomposer
218. C) One dominant and one recessive allele
219. C) Fermentation
220. B) Xylem
221. Which of the following is NOT a function of the skeletal system?
• A) Providing structural support
• B) Producing hormones
• C) Protecting internal organs
• D) Storing minerals
222. Which type of white blood cell is responsible for producing antibodies?
• A) Neutrophils
• B) Eosinophils
• C) B lymphocytes
• D) T lymphocytes
223. Which of the following is a characteristic of all living organisms?
• A) Ability to move
• B) Ability to reproduce
• C) Ability to fly
• D) Ability to breathe oxygen
224. What does the term "genetic mutation" refer to?
• A) Changes in the physical appearance of an organism
• B) Changes in the genetic code of an organism
• C) The process of cellular division
• D) The movement of genes between organisms
225. Which of the following cells contain chlorophyll?
• A) Animal cells
• B) Plant cells
• C) Bacterial cells
• D) Red blood cells
226. Which of the following is an example of a carnivore?
• A) Cow
• B) Eagle
• C) Sheep
• D) Deer
227. What is the basic unit of life?
• A) Atom
• B) Cell
• C) Tissue
• D) Organ
215. B) Transport amino acids to ribosomes
216. C) Circulatory system
217. C) Decomposer
218. C) One dominant and one recessive allele
219. C) Fermentation
220. B) Xylem
221. Which of the following is NOT a function of the skeletal system?
• A) Providing structural support
• B) Producing hormones
• C) Protecting internal organs
• D) Storing minerals
222. Which type of white blood cell is responsible for producing antibodies?
• A) Neutrophils
• B) Eosinophils
• C) B lymphocytes
• D) T lymphocytes
223. Which of the following is a characteristic of all living organisms?
• A) Ability to move
• B) Ability to reproduce
• C) Ability to fly
• D) Ability to breathe oxygen
224. What does the term "genetic mutation" refer to?
• A) Changes in the physical appearance of an organism
• B) Changes in the genetic code of an organism
• C) The process of cellular division
• D) The movement of genes between organisms
225. Which of the following cells contain chlorophyll?
• A) Animal cells
• B) Plant cells
• C) Bacterial cells
• D) Red blood cells
226. Which of the following is an example of a carnivore?
• A) Cow
• B) Eagle
• C) Sheep
• D) Deer
227. What is the basic unit of life?
• A) Atom
• B) Cell
• C) Tissue
• D) Organ
35
228. What is the role of the ribosome in a cell?
• A) Replicating DNA
• B) Synthesizing proteins
• C) Storing energy
• D) Breaking down waste
229. What is the function of the Golgi apparatus in the cell?
• A) Protein synthesis
• B) Modifying and packaging proteins
• C) Storing genetic information
• D) Producing energy
230. Which of the following is NOT a type of connective tissue?
• A) Blood
• B) Bone
• C) Muscle
• D) Cartilage
231. Which of the following is true about the process of meiosis?
• A) It results in the formation of four identical cells
• B) It occurs only in somatic cells
• C) It reduces the chromosome number by half
• D) It produces two daughter cells
232. In what part of the plant does photosynthesis mainly take place?
• A) Roots
• B) Stems
• C) Flowers
• D) Leaves
233. What is the function of the endocrine system?
• A) To fight infections
• B) To regulate body functions through hormones
• C) To transport oxygen to tissues
• D) To digest food
234. Which process in the carbon cycle involves the release of carbon dioxide from plants
and animals?
• A) Photosynthesis
• B) Respiration
• C) Combustion
• D) Nitrogen fixation
228. What is the role of the ribosome in a cell?
• A) Replicating DNA
• B) Synthesizing proteins
• C) Storing energy
• D) Breaking down waste
229. What is the function of the Golgi apparatus in the cell?
• A) Protein synthesis
• B) Modifying and packaging proteins
• C) Storing genetic information
• D) Producing energy
230. Which of the following is NOT a type of connective tissue?
• A) Blood
• B) Bone
• C) Muscle
• D) Cartilage
231. Which of the following is true about the process of meiosis?
• A) It results in the formation of four identical cells
• B) It occurs only in somatic cells
• C) It reduces the chromosome number by half
• D) It produces two daughter cells
232. In what part of the plant does photosynthesis mainly take place?
• A) Roots
• B) Stems
• C) Flowers
• D) Leaves
233. What is the function of the endocrine system?
• A) To fight infections
• B) To regulate body functions through hormones
• C) To transport oxygen to tissues
• D) To digest food
234. Which process in the carbon cycle involves the release of carbon dioxide from plants
and animals?
• A) Photosynthesis
• B) Respiration
• C) Combustion
• D) Nitrogen fixation
36
235. What is the role of the large intestine in digestion?
• A) Absorbing nutrients
• B) Producing bile
• C) Absorbing water and forming feces
• D) Breaking down carbohydrates
236. Which of the following is a characteristic of all enzymes?
• A) They are consumed in chemical reactions
• B) They speed up chemical reactions
• C) They are only found in animals
• D) They are a type of carbohydrate
237. Which of the following is NOT a part of the human respiratory system?
• A) Lungs
• B) Trachea
• C) Esophagus
• D) Diaphragm
238. What is the primary function of the lymphatic system?
• A) To circulate oxygen throughout the body
• B) To transport nutrients
• C) To protect the body from infection
• D) To regulate body temperature
239. Which of the following statements about the DNA structure is true?
• A) DNA is made up of amino acids
• B) DNA is a double-stranded molecule
• C) DNA contains uracil instead of thymine
• D) DNA is found only in the nucleus of plant cells
240. What is the term for the process of water moving from the roots to the leaves in
plants?
• A) Respiration
• B) Transpiration
• C) Photosynthesis
• D) Diffusion
Answers:
221. B) Producing hormones
222. C) B lymphocytes
223. B) Ability to reproduce
235. What is the role of the large intestine in digestion?
• A) Absorbing nutrients
• B) Producing bile
• C) Absorbing water and forming feces
• D) Breaking down carbohydrates
236. Which of the following is a characteristic of all enzymes?
• A) They are consumed in chemical reactions
• B) They speed up chemical reactions
• C) They are only found in animals
• D) They are a type of carbohydrate
237. Which of the following is NOT a part of the human respiratory system?
• A) Lungs
• B) Trachea
• C) Esophagus
• D) Diaphragm
238. What is the primary function of the lymphatic system?
• A) To circulate oxygen throughout the body
• B) To transport nutrients
• C) To protect the body from infection
• D) To regulate body temperature
239. Which of the following statements about the DNA structure is true?
• A) DNA is made up of amino acids
• B) DNA is a double-stranded molecule
• C) DNA contains uracil instead of thymine
• D) DNA is found only in the nucleus of plant cells
240. What is the term for the process of water moving from the roots to the leaves in
plants?
• A) Respiration
• B) Transpiration
• C) Photosynthesis
• D) Diffusion
Answers:
221. B) Producing hormones
222. C) B lymphocytes
223. B) Ability to reproduce
37
224. B) Changes in the genetic code of an organism
225. B) Plant cells
226. B) Eagle
227. B) Cell
228. B) Synthesizing proteins
229. B) Modifying and packaging proteins
230. C) Muscle
231. C) It reduces the chromosome number by half
232. D) Leaves
233. B) To regulate body functions through hormones
234. B) Respiration
235. C) Absorbing water and forming feces
236. B) They speed up chemical reactions
237. C) Esophagus
238. C) To protect the body from infection
239. B) DNA is a double-stranded molecule
240. B) Transpiration
241. Which of the following is NOT a function of proteins?
• A) Enzyme catalysis
• B) Hormone regulation
• C) Storing genetic information
• D) Immune response
242. The process by which green plants use sunlight to synthesize food is called:
• A) Respiration
• B) Fermentation
• C) Photosynthesis
• D) Digestion
243. Which structure in the cell is responsible for controlling the activities of the cell?
• A) Ribosome
• B) Nucleus
• C) Mitochondria
• D) Golgi apparatus
244. The process of water entering a plant root from the soil occurs through:
• A) Diffusion
• B) Osmosis
• C) Active transport
• D) Evaporation
224. B) Changes in the genetic code of an organism
225. B) Plant cells
226. B) Eagle
227. B) Cell
228. B) Synthesizing proteins
229. B) Modifying and packaging proteins
230. C) Muscle
231. C) It reduces the chromosome number by half
232. D) Leaves
233. B) To regulate body functions through hormones
234. B) Respiration
235. C) Absorbing water and forming feces
236. B) They speed up chemical reactions
237. C) Esophagus
238. C) To protect the body from infection
239. B) DNA is a double-stranded molecule
240. B) Transpiration
241. Which of the following is NOT a function of proteins?
• A) Enzyme catalysis
• B) Hormone regulation
• C) Storing genetic information
• D) Immune response
242. The process by which green plants use sunlight to synthesize food is called:
• A) Respiration
• B) Fermentation
• C) Photosynthesis
• D) Digestion
243. Which structure in the cell is responsible for controlling the activities of the cell?
• A) Ribosome
• B) Nucleus
• C) Mitochondria
• D) Golgi apparatus
244. The process of water entering a plant root from the soil occurs through:
• A) Diffusion
• B) Osmosis
• C) Active transport
• D) Evaporation
38
245. What is the term used to describe an organism that produces its own food using light
energy?
• A) Heterotroph
• B) Autotroph
• C) Decomposer
• D) Carnivore
246. Which of the following is a function of the circulatory system?
• A) Absorb nutrients
• B) Transport oxygen and nutrients
• C) Break down food
• D) Produce hormones
247. Which cell organelle is primarily responsible for producing energy?
• A) Ribosome
• B) Chloroplast
• C) Mitochondria
• D) Endoplasmic reticulum
248. The transfer of pollen from one flower to another is called:
• A) Germination
• B) Pollination
• C) Fertilization
• D) Reproduction
249. In what type of environment do most organisms in the kingdom Protista live?
• A) Wet environments
• B) Dry environments
• C) Extreme temperatures
• D) In the soil
250. Which of the following is the primary purpose of mitosis?
• A) Reproduction
• B) Growth and development
• C) Genetic variation
• D) Energy production
251. The process by which organisms convert glucose and oxygen into energy is called:
• A) Photosynthesis
• B) Aerobic respiration
• C) Fermentation
• D) Glycolysis
252. Which part of the plant is responsible for absorbing water and minerals from the soil?
• A) Stem
• B) Root
• C) Leaf
• D) Flower
253. What type of cell division results in the formation of gametes?
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
254. Which of the following is a characteristic of prokaryotic cells?
• A) They have a nucleus
• B) They lack membrane-bound organelles
245. What is the term used to describe an organism that produces its own food using light
energy?
• A) Heterotroph
• B) Autotroph
• C) Decomposer
• D) Carnivore
246. Which of the following is a function of the circulatory system?
• A) Absorb nutrients
• B) Transport oxygen and nutrients
• C) Break down food
• D) Produce hormones
247. Which cell organelle is primarily responsible for producing energy?
• A) Ribosome
• B) Chloroplast
• C) Mitochondria
• D) Endoplasmic reticulum
248. The transfer of pollen from one flower to another is called:
• A) Germination
• B) Pollination
• C) Fertilization
• D) Reproduction
249. In what type of environment do most organisms in the kingdom Protista live?
• A) Wet environments
• B) Dry environments
• C) Extreme temperatures
• D) In the soil
250. Which of the following is the primary purpose of mitosis?
• A) Reproduction
• B) Growth and development
• C) Genetic variation
• D) Energy production
251. The process by which organisms convert glucose and oxygen into energy is called:
• A) Photosynthesis
• B) Aerobic respiration
• C) Fermentation
• D) Glycolysis
252. Which part of the plant is responsible for absorbing water and minerals from the soil?
• A) Stem
• B) Root
• C) Leaf
• D) Flower
253. What type of cell division results in the formation of gametes?
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
254. Which of the following is a characteristic of prokaryotic cells?
• A) They have a nucleus
• B) They lack membrane-bound organelles
39
• C) They have multiple chromosomes
• D) They are larger than eukaryotic cells
255. What is the role of the digestive system?
• A) To break down food and absorb nutrients
• B) To fight infections
• C) To produce hormones
• D) To regulate body temperature
256. The specialized cells in the human body that transmit electrical signals are called:
• A) Epithelial cells
• B) Muscle cells
• C) Nerve cells
• D) Blood cells
257. What is the function of the vacuole in plant cells?
• A) To store water and nutrients
• B) To synthesize proteins
• C) To break down waste materials
• D) To produce energy
258. Which of the following is true about the process of cellular respiration?
• A) It occurs only in the mitochondria of animal cells
• B) It produces glucose and oxygen
• C) It occurs in both plant and animal cells
• D) It does not require oxygen
259. Which of the following is an example of a limiting factor in an ecosystem?
• A) Availability of water
• B) The number of predators
• C) Amount of sunlight
• D) All of the above
260. Which of the following is the first step in the process of digestion?
• A) Absorption of nutrients
• B) Breaking down food in the stomach
• C) Ingestion of food
• D) Elimination of waste
Answers:
241. C) Storing genetic information
242. C) Photosynthesis
• C) They have multiple chromosomes
• D) They are larger than eukaryotic cells
255. What is the role of the digestive system?
• A) To break down food and absorb nutrients
• B) To fight infections
• C) To produce hormones
• D) To regulate body temperature
256. The specialized cells in the human body that transmit electrical signals are called:
• A) Epithelial cells
• B) Muscle cells
• C) Nerve cells
• D) Blood cells
257. What is the function of the vacuole in plant cells?
• A) To store water and nutrients
• B) To synthesize proteins
• C) To break down waste materials
• D) To produce energy
258. Which of the following is true about the process of cellular respiration?
• A) It occurs only in the mitochondria of animal cells
• B) It produces glucose and oxygen
• C) It occurs in both plant and animal cells
• D) It does not require oxygen
259. Which of the following is an example of a limiting factor in an ecosystem?
• A) Availability of water
• B) The number of predators
• C) Amount of sunlight
• D) All of the above
260. Which of the following is the first step in the process of digestion?
• A) Absorption of nutrients
• B) Breaking down food in the stomach
• C) Ingestion of food
• D) Elimination of waste
Answers:
241. C) Storing genetic information
242. C) Photosynthesis
40
243. B) Nucleus
244. B) Osmosis
245. B) Autotroph
246. B) Transport oxygen and nutrients
247. C) Mitochondria
248. B) Pollination
249. A) Wet environments
250. B) Growth and development
251. B) Aerobic respiration
252. B) Root
253. B) Meiosis
254. B) They lack membrane-bound organelles
255. A) To break down food and absorb nutrients
256. C) Nerve cells
257. A) To store water and nutrients
258. C) It occurs in both plant and animal cells
259. D) All of the above
260. C) Ingestion of food
261. Which part of the cell contains the genetic material?
• A) Mitochondria
• B) Nucleus
• C) Ribosome
• D) Endoplasmic reticulum
262. The process by which a cell divides to form two identical daughter cells is called:
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
263. Which of the following is the main source of energy for the human body?
• A) Protein
• B) Carbohydrates
• C) Lipids
• D) Nucleic acids
264. Which of the following is an example of asexual reproduction?
• A) Budding in yeast
• B) Pollination in flowers
• C) Fertilization in humans
• D) Crossing over in meiosis
243. B) Nucleus
244. B) Osmosis
245. B) Autotroph
246. B) Transport oxygen and nutrients
247. C) Mitochondria
248. B) Pollination
249. A) Wet environments
250. B) Growth and development
251. B) Aerobic respiration
252. B) Root
253. B) Meiosis
254. B) They lack membrane-bound organelles
255. A) To break down food and absorb nutrients
256. C) Nerve cells
257. A) To store water and nutrients
258. C) It occurs in both plant and animal cells
259. D) All of the above
260. C) Ingestion of food
261. Which part of the cell contains the genetic material?
• A) Mitochondria
• B) Nucleus
• C) Ribosome
• D) Endoplasmic reticulum
262. The process by which a cell divides to form two identical daughter cells is called:
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
263. Which of the following is the main source of energy for the human body?
• A) Protein
• B) Carbohydrates
• C) Lipids
• D) Nucleic acids
264. Which of the following is an example of asexual reproduction?
• A) Budding in yeast
• B) Pollination in flowers
• C) Fertilization in humans
• D) Crossing over in meiosis
41
265. Which of the following is true about RNA?
• A) It contains the sugar deoxyribose
• B) It is double-stranded
• C) It contains the nitrogenous base uracil
• D) It carries genetic information only in eukaryotes
266. Which of the following is NOT a feature of prokaryotic cells?
• A) No nucleus
• B) Circular DNA
• C) Membrane-bound organelles
• D) Smaller size
267. What is the role of chloroplasts in plant cells?
• A) To carry out cellular respiration
• B) To store energy
• C) To perform photosynthesis
• D) To synthesize proteins
268. The main function of the ribosomes is to:
• A) Make energy for the cell
• B) Synthesize proteins
• C) Store genetic information
• D) Control the cell's activities
269. Which of the following is a function of the smooth endoplasmic reticulum?
• A) Protein synthesis
• B) Detoxification
• C) Ribosome production
• D) Packaging proteins
270. Which type of blood vessel carries oxygenated blood away from the heart?
• A) Arteries
• B) Veins
• C) Capillaries
• D) Lymph vessels
271. What is the function of the small intestine in digestion?
• A) Absorb nutrients
• B) Produce digestive enzymes
• C) Store waste
• D) Break down fats
272. Which of the following structures helps in the movement of substances in and out of
the cell?
• A) Cell wall
• B) Nucleus
• C) Plasma membrane
• D) Mitochondria
265. Which of the following is true about RNA?
• A) It contains the sugar deoxyribose
• B) It is double-stranded
• C) It contains the nitrogenous base uracil
• D) It carries genetic information only in eukaryotes
266. Which of the following is NOT a feature of prokaryotic cells?
• A) No nucleus
• B) Circular DNA
• C) Membrane-bound organelles
• D) Smaller size
267. What is the role of chloroplasts in plant cells?
• A) To carry out cellular respiration
• B) To store energy
• C) To perform photosynthesis
• D) To synthesize proteins
268. The main function of the ribosomes is to:
• A) Make energy for the cell
• B) Synthesize proteins
• C) Store genetic information
• D) Control the cell's activities
269. Which of the following is a function of the smooth endoplasmic reticulum?
• A) Protein synthesis
• B) Detoxification
• C) Ribosome production
• D) Packaging proteins
270. Which type of blood vessel carries oxygenated blood away from the heart?
• A) Arteries
• B) Veins
• C) Capillaries
• D) Lymph vessels
271. What is the function of the small intestine in digestion?
• A) Absorb nutrients
• B) Produce digestive enzymes
• C) Store waste
• D) Break down fats
272. Which of the following structures helps in the movement of substances in and out of
the cell?
• A) Cell wall
• B) Nucleus
• C) Plasma membrane
• D) Mitochondria
42
273. Which of the following best describes the function of the mitochondria?
• A) Protein synthesis
• B) Energy production through cellular respiration
• C) Photosynthesis
• D) Genetic material storage
274. Which of the following is NOT part of the nitrogen cycle?
• A) Nitrogen fixation
• B) Denitrification
• C) Respiration
• D) Nitrification
275. The process of converting light energy into chemical energy in plants is called:
• A) Respiration
• B) Photosynthesis
• C) Fermentation
• D) Glycolysis
276. What is the primary function of the lymphatic system?
• A) To transport oxygen to tissues
• B) To remove waste from the body
• C) To fight infections and maintain fluid balance
• D) To store glucose
277. Which of the following is a product of cellular respiration?
• A) Oxygen
• B) Glucose
• C) Carbon dioxide
• D) Nitrogen
278. Which of the following structures is found only in plant cells?
• A) Nucleus
• B) Ribosome
• C) Chloroplast
• D) Mitochondrion
279. In which part of the plant does most of the water absorption occur?
• A) Stem
• B) Leaf
• C) Root
• D) Flower
280. Which of the following is true about the cell wall in plant cells?
• A) It is composed of cellulose
• B) It is found in animal cells
• C) It regulates the movement of substances into the cell
• D) It helps in protein synthesis
273. Which of the following best describes the function of the mitochondria?
• A) Protein synthesis
• B) Energy production through cellular respiration
• C) Photosynthesis
• D) Genetic material storage
274. Which of the following is NOT part of the nitrogen cycle?
• A) Nitrogen fixation
• B) Denitrification
• C) Respiration
• D) Nitrification
275. The process of converting light energy into chemical energy in plants is called:
• A) Respiration
• B) Photosynthesis
• C) Fermentation
• D) Glycolysis
276. What is the primary function of the lymphatic system?
• A) To transport oxygen to tissues
• B) To remove waste from the body
• C) To fight infections and maintain fluid balance
• D) To store glucose
277. Which of the following is a product of cellular respiration?
• A) Oxygen
• B) Glucose
• C) Carbon dioxide
• D) Nitrogen
278. Which of the following structures is found only in plant cells?
• A) Nucleus
• B) Ribosome
• C) Chloroplast
• D) Mitochondrion
279. In which part of the plant does most of the water absorption occur?
• A) Stem
• B) Leaf
• C) Root
• D) Flower
280. Which of the following is true about the cell wall in plant cells?
• A) It is composed of cellulose
• B) It is found in animal cells
• C) It regulates the movement of substances into the cell
• D) It helps in protein synthesis
43
Answers:
261. B) Nucleus
262. A) Mitosis
263. B) Carbohydrates
264. A) Budding in yeast
265. C) It contains the nitrogenous base uracil
266. C) Membrane-bound organelles
267. C) To perform photosynthesis
268. B) Synthesize proteins
269. B) Detoxification
270. A) Arteries
271. A) Absorb nutrients
272. C) Plasma membrane
273. B) Energy production through cellular respiration
274. C) Respiration
275. B) Photosynthesis
276. C) To fight infections and maintain fluid balance
277. C) Carbon dioxide
278. C) Chloroplast
279. C) Root
280. A) It is composed of cellulose
281. Which of the following is an example of a homologous structure?
• A) Bat’s wing and a bird’s wing
• B) Whale’s flipper and a human’s arm
• C) Butterfly’s wing and a bat’s wing
• D) Dog’s paw and a horse’s hoof
282. The process of converting glucose into alcohol and carbon dioxide in the absence of
oxygen is called:
• A) Aerobic respiration
• B) Lactic acid fermentation
• C) Alcoholic fermentation
• D) Photosynthesis
Answers:
261. B) Nucleus
262. A) Mitosis
263. B) Carbohydrates
264. A) Budding in yeast
265. C) It contains the nitrogenous base uracil
266. C) Membrane-bound organelles
267. C) To perform photosynthesis
268. B) Synthesize proteins
269. B) Detoxification
270. A) Arteries
271. A) Absorb nutrients
272. C) Plasma membrane
273. B) Energy production through cellular respiration
274. C) Respiration
275. B) Photosynthesis
276. C) To fight infections and maintain fluid balance
277. C) Carbon dioxide
278. C) Chloroplast
279. C) Root
280. A) It is composed of cellulose
281. Which of the following is an example of a homologous structure?
• A) Bat’s wing and a bird’s wing
• B) Whale’s flipper and a human’s arm
• C) Butterfly’s wing and a bat’s wing
• D) Dog’s paw and a horse’s hoof
282. The process of converting glucose into alcohol and carbon dioxide in the absence of
oxygen is called:
• A) Aerobic respiration
• B) Lactic acid fermentation
• C) Alcoholic fermentation
• D) Photosynthesis
44
283. Which of the following is a type of nitrogenous base found in RNA?
• A) Thymine
• B) Adenine
• C) Uracil
• D) Cytosine
284. What is the function of the cell membrane?
• A) To control the movement of substances in and out of the cell
• B) To produce energy
• C) To store genetic information
• D) To synthesize proteins
285. Which of the following is the correct sequence of events in the cell cycle?
• A) G1 → S → G2 → M
• B) M → G1 → G2 → S
• C) S → G1 → G2 → M
• D) G1 → G2 → M → S
286. What is the primary function of white blood cells?
• A) Carry oxygen
• B) Fight infections
• C) Clot the blood
• D) Transport nutrients
287. Which of the following is a result of the process of meiosis?
• A) Two genetically identical daughter cells
• B) Four genetically unique gametes
• C) One diploid cell
• D) Two genetically different somatic cells
288. Which of the following is an example of a vestigial structure?
• A) Human appendix
• B) Whale’s tail
• C) Bird’s beak
• D) Dog’s legs
289. The ability of an organism to maintain a stable internal environment is called:
• A) Homeostasis
• B) Metabolism
• C) Adaptation
• D) Evolution
290. What type of bond holds together the two strands of a DNA molecule?
• A) Hydrogen bonds
• B) Ionic bonds
• C) Covalent bonds
• D) Metallic bonds
283. Which of the following is a type of nitrogenous base found in RNA?
• A) Thymine
• B) Adenine
• C) Uracil
• D) Cytosine
284. What is the function of the cell membrane?
• A) To control the movement of substances in and out of the cell
• B) To produce energy
• C) To store genetic information
• D) To synthesize proteins
285. Which of the following is the correct sequence of events in the cell cycle?
• A) G1 → S → G2 → M
• B) M → G1 → G2 → S
• C) S → G1 → G2 → M
• D) G1 → G2 → M → S
286. What is the primary function of white blood cells?
• A) Carry oxygen
• B) Fight infections
• C) Clot the blood
• D) Transport nutrients
287. Which of the following is a result of the process of meiosis?
• A) Two genetically identical daughter cells
• B) Four genetically unique gametes
• C) One diploid cell
• D) Two genetically different somatic cells
288. Which of the following is an example of a vestigial structure?
• A) Human appendix
• B) Whale’s tail
• C) Bird’s beak
• D) Dog’s legs
289. The ability of an organism to maintain a stable internal environment is called:
• A) Homeostasis
• B) Metabolism
• C) Adaptation
• D) Evolution
290. What type of bond holds together the two strands of a DNA molecule?
• A) Hydrogen bonds
• B) Ionic bonds
• C) Covalent bonds
• D) Metallic bonds
45
291. What is the function of the xylem in plants?
• A) To transport water and minerals from the roots to the rest of the plant
• B) To transport food from the leaves to the roots
• C) To produce energy
• D) To protect the plant from predators
292. Which of the following is a key feature of the process of natural selection?
• A) Organisms produce offspring with identical traits
• B) Environmental factors influence survival and reproduction
• C) Organisms cannot change in response to environmental conditions
• D) All organisms in a population are genetically identical
293. Which of the following is a characteristic of a carnivore?
• A) Herbivorous diet
• B) Eats both plants and animals
• C) Eats only animal flesh
• D) Has a long digestive tract
294. The light-dependent reactions of photosynthesis take place in which part of the
chloroplast?
• A) Stroma
• B) Thylakoid membrane
• C) Cytoplasm
• D) Nucleus
295. The part of the brain that controls basic functions such as heart rate, breathing, and
blood pressure is the:
• A) Cerebrum
• B) Cerebellum
• C) Medulla oblongata
• D) Hypothalamus
296. The molecule that carries the genetic code for a particular trait from the DNA to the
ribosome is called:
• A) mRNA
• B) tRNA
• C) rRNA
• D) DNA polymerase
297. What is the term used to describe the change in an organism’s genetic makeup over
time?
• A) Mutation
• B) Evolution
• C) Adaptation
• D) Reproduction
291. What is the function of the xylem in plants?
• A) To transport water and minerals from the roots to the rest of the plant
• B) To transport food from the leaves to the roots
• C) To produce energy
• D) To protect the plant from predators
292. Which of the following is a key feature of the process of natural selection?
• A) Organisms produce offspring with identical traits
• B) Environmental factors influence survival and reproduction
• C) Organisms cannot change in response to environmental conditions
• D) All organisms in a population are genetically identical
293. Which of the following is a characteristic of a carnivore?
• A) Herbivorous diet
• B) Eats both plants and animals
• C) Eats only animal flesh
• D) Has a long digestive tract
294. The light-dependent reactions of photosynthesis take place in which part of the
chloroplast?
• A) Stroma
• B) Thylakoid membrane
• C) Cytoplasm
• D) Nucleus
295. The part of the brain that controls basic functions such as heart rate, breathing, and
blood pressure is the:
• A) Cerebrum
• B) Cerebellum
• C) Medulla oblongata
• D) Hypothalamus
296. The molecule that carries the genetic code for a particular trait from the DNA to the
ribosome is called:
• A) mRNA
• B) tRNA
• C) rRNA
• D) DNA polymerase
297. What is the term used to describe the change in an organism’s genetic makeup over
time?
• A) Mutation
• B) Evolution
• C) Adaptation
• D) Reproduction
46
298. The main function of the pancreas in the digestive system is to:
• A) Produce insulin and digestive enzymes
• B) Store bile
• C) Absorb nutrients
• D) Break down proteins
299. Which of the following is true about the process of translation in protein synthesis?
• A) mRNA is synthesized in the nucleus
• B) tRNA carries amino acids to the ribosome
• C) DNA is transcribed into RNA
• D) Ribosomes break down mRNA
300. Which of the following is a function of the lymphatic system?
• A) Circulate oxygen throughout the body
• B) Fight infection and maintain fluid balance
• C) Regulate metabolism
• D) Absorb nutrients
Answers:
281. B) Whale’s flipper and a human’s arm
282. C) Alcoholic fermentation
283. C) Uracil
284. A) To control the movement of substances in and out of the cell
285. A) G1 → S → G2 → M
286. B) Fight infections
287. B) Four genetically unique gametes
288. A) Human appendix
289. A) Homeostasis
290. A) Hydrogen bonds
291. A) To transport water and minerals from the roots to the rest of the plant
292. B) Environmental factors influence survival and reproduction
293. C) Eats only animal flesh
294. B) Thylakoid membrane
298. The main function of the pancreas in the digestive system is to:
• A) Produce insulin and digestive enzymes
• B) Store bile
• C) Absorb nutrients
• D) Break down proteins
299. Which of the following is true about the process of translation in protein synthesis?
• A) mRNA is synthesized in the nucleus
• B) tRNA carries amino acids to the ribosome
• C) DNA is transcribed into RNA
• D) Ribosomes break down mRNA
300. Which of the following is a function of the lymphatic system?
• A) Circulate oxygen throughout the body
• B) Fight infection and maintain fluid balance
• C) Regulate metabolism
• D) Absorb nutrients
Answers:
281. B) Whale’s flipper and a human’s arm
282. C) Alcoholic fermentation
283. C) Uracil
284. A) To control the movement of substances in and out of the cell
285. A) G1 → S → G2 → M
286. B) Fight infections
287. B) Four genetically unique gametes
288. A) Human appendix
289. A) Homeostasis
290. A) Hydrogen bonds
291. A) To transport water and minerals from the roots to the rest of the plant
292. B) Environmental factors influence survival and reproduction
293. C) Eats only animal flesh
294. B) Thylakoid membrane
47
295. C) Medulla oblongata
296. A) mRNA
297. B) Evolution
298. A) Produce insulin and digestive enzymes
299. B) tRNA carries amino acids to the ribosome
300. B) Fight infection and maintain fluid balance
301. Which of the following processes requires oxygen?
• A) Anaerobic respiration
• B) Aerobic respiration
• C) Glycolysis
• D) Fermentation
302. Which of the following is NOT part of the circulatory system?
• A) Heart
• B) Blood vessels
• C) Lungs
• D) Blood
303. Which part of the nervous system is responsible for controlling voluntary
movements?
• A) Autonomic nervous system
• B) Somatic nervous system
• C) Central nervous system
• D) Peripheral nervous system
304. What is the name of the pigment responsible for absorbing light energy in plants?
• A) Carotene
• B) Chlorophyll
• C) Xanthophyll
• D) Melanin
305. Which of the following is the main function of the large intestine?
• A) Absorb nutrients
• B) Absorb water and salts, and form feces
• C) Digest proteins
• D) Break down carbohydrates
306. Which of the following is true about the process of osmosis?
• A) It requires energy
• B) It is the movement of water molecules from low to high concentration
• C) It only occurs in plant cells
• D) It involves the movement of water molecules through a selectively permeable
membrane
295. C) Medulla oblongata
296. A) mRNA
297. B) Evolution
298. A) Produce insulin and digestive enzymes
299. B) tRNA carries amino acids to the ribosome
300. B) Fight infection and maintain fluid balance
301. Which of the following processes requires oxygen?
• A) Anaerobic respiration
• B) Aerobic respiration
• C) Glycolysis
• D) Fermentation
302. Which of the following is NOT part of the circulatory system?
• A) Heart
• B) Blood vessels
• C) Lungs
• D) Blood
303. Which part of the nervous system is responsible for controlling voluntary
movements?
• A) Autonomic nervous system
• B) Somatic nervous system
• C) Central nervous system
• D) Peripheral nervous system
304. What is the name of the pigment responsible for absorbing light energy in plants?
• A) Carotene
• B) Chlorophyll
• C) Xanthophyll
• D) Melanin
305. Which of the following is the main function of the large intestine?
• A) Absorb nutrients
• B) Absorb water and salts, and form feces
• C) Digest proteins
• D) Break down carbohydrates
306. Which of the following is true about the process of osmosis?
• A) It requires energy
• B) It is the movement of water molecules from low to high concentration
• C) It only occurs in plant cells
• D) It involves the movement of water molecules through a selectively permeable
membrane
48
307. Which of the following is the function of the Golgi apparatus?
• A) Protein synthesis
• B) Packaging and distribution of proteins
• C) Storage of water
• D) Breakdown of cellular waste
308. Which of the following organisms is classified as a fungi?
• A) Algae
• B) Yeast
• C) Bacteria
• D) Moss
309. What is the role of the stomata in plants?
• A) Transport water
• B) Absorb sunlight
• C) Allow gas exchange
• D) Store food
310. Which of the following is the primary function of the skeletal system?
• A) To protect vital organs
• B) To produce hormones
• C) To regulate body temperature
• D) To synthesize proteins
311. Which of the following is true about genetic variation in a population?
• A) It arises only through mutations
• B) It can result from sexual reproduction and mutations
• C) It only occurs in asexual organisms
• D) It does not affect survival
312. Which of the following is a function of the kidneys?
• A) Produce hormones
• B) Filter waste from the blood and regulate water balance
• C) Produce digestive enzymes
• D) Store bile
313. Which of the following best describes the process of diffusion?
• A) The movement of water through a selectively permeable membrane
• B) The movement of molecules from an area of high concentration to low
concentration
• C) The movement of ions through an active transport pump
• D) The movement of molecules against their concentration gradient
307. Which of the following is the function of the Golgi apparatus?
• A) Protein synthesis
• B) Packaging and distribution of proteins
• C) Storage of water
• D) Breakdown of cellular waste
308. Which of the following organisms is classified as a fungi?
• A) Algae
• B) Yeast
• C) Bacteria
• D) Moss
309. What is the role of the stomata in plants?
• A) Transport water
• B) Absorb sunlight
• C) Allow gas exchange
• D) Store food
310. Which of the following is the primary function of the skeletal system?
• A) To protect vital organs
• B) To produce hormones
• C) To regulate body temperature
• D) To synthesize proteins
311. Which of the following is true about genetic variation in a population?
• A) It arises only through mutations
• B) It can result from sexual reproduction and mutations
• C) It only occurs in asexual organisms
• D) It does not affect survival
312. Which of the following is a function of the kidneys?
• A) Produce hormones
• B) Filter waste from the blood and regulate water balance
• C) Produce digestive enzymes
• D) Store bile
313. Which of the following best describes the process of diffusion?
• A) The movement of water through a selectively permeable membrane
• B) The movement of molecules from an area of high concentration to low
concentration
• C) The movement of ions through an active transport pump
• D) The movement of molecules against their concentration gradient
49
314. Which of the following is an example of an inherited trait?
• A) Skin color
• B) Scarring from an injury
• C) Ability to speak a language
• D) Knowledge of math
315. Which of the following is NOT part of the digestive system?
• A) Stomach
• B) Heart
• C) Small intestine
• D) Liver
316. The process by which a cell divides to form two identical daughter cells is known as:
• A) Meiosis
• B) Mitosis
• C) Fertilization
• D) Germination
317. Which of the following organ systems is responsible for producing hormones?
• A) Respiratory system
• B) Endocrine system
• C) Digestive system
• D) Circulatory system
318. The process by which an organism’s body maintains a stable internal environment
despite changes in the external environment is called:
• A) Homeostasis
• B) Metabolism
• C) Reproduction
• D) Adaptation
319. Which of the following is a function of the human immune system?
• A) To regulate body temperature
• B) To fight infections and diseases
• C) To absorb nutrients
• D) To break down food
320. Which of the following is the most important factor in the process of photosynthesis?
• A) Water
• B) Sunlight
• C) Oxygen
• D) Carbon dioxide
Answers:
301. B) Aerobic respiration
302. C) Lungs
303. B) Somatic nervous system
304. B) Chlorophyll
305. B) Absorb water and salts, and form feces
306. D) It involves the movement of water molecules through a selectively permeable
membrane
314. Which of the following is an example of an inherited trait?
• A) Skin color
• B) Scarring from an injury
• C) Ability to speak a language
• D) Knowledge of math
315. Which of the following is NOT part of the digestive system?
• A) Stomach
• B) Heart
• C) Small intestine
• D) Liver
316. The process by which a cell divides to form two identical daughter cells is known as:
• A) Meiosis
• B) Mitosis
• C) Fertilization
• D) Germination
317. Which of the following organ systems is responsible for producing hormones?
• A) Respiratory system
• B) Endocrine system
• C) Digestive system
• D) Circulatory system
318. The process by which an organism’s body maintains a stable internal environment
despite changes in the external environment is called:
• A) Homeostasis
• B) Metabolism
• C) Reproduction
• D) Adaptation
319. Which of the following is a function of the human immune system?
• A) To regulate body temperature
• B) To fight infections and diseases
• C) To absorb nutrients
• D) To break down food
320. Which of the following is the most important factor in the process of photosynthesis?
• A) Water
• B) Sunlight
• C) Oxygen
• D) Carbon dioxide
Answers:
301. B) Aerobic respiration
302. C) Lungs
303. B) Somatic nervous system
304. B) Chlorophyll
305. B) Absorb water and salts, and form feces
306. D) It involves the movement of water molecules through a selectively permeable
membrane
50
307. B) Packaging and distribution of proteins
308. B) Yeast
309. C) Allow gas exchange
310. A) To protect vital organs
311. B) It can result from sexual reproduction and mutations
312. B) Filter waste from the blood and regulate water balance
313. B) The movement of molecules from an area of high concentration to low
concentration
314. A) Skin color
315. B) Heart
316. B) Mitosis
317. B) Endocrine system
318. A) Homeostasis
319. B) To fight infections and diseases
320. B) Sunlight
321. Which of the following is NOT a function of proteins in living organisms?
• A) Enzyme catalysis
• B) Structural support
• C) Energy storage
• D) Oxygen transport
322. What is the main function of red blood cells?
• A) Carry oxygen from the lungs to the tissues
• B) Fight infections
• C) Aid in clotting
• D) Transport nutrients
323. The human body has how many pairs of chromosomes?
• A) 23
• B) 46
• C) 22
• D) 24
324. Which of the following is a result of a mutation in a gene?
• A) A change in the organism’s phenotype
• B) A decrease in genetic diversity
• C) An increase in the organism's survival
• D) A complete loss of the gene
307. B) Packaging and distribution of proteins
308. B) Yeast
309. C) Allow gas exchange
310. A) To protect vital organs
311. B) It can result from sexual reproduction and mutations
312. B) Filter waste from the blood and regulate water balance
313. B) The movement of molecules from an area of high concentration to low
concentration
314. A) Skin color
315. B) Heart
316. B) Mitosis
317. B) Endocrine system
318. A) Homeostasis
319. B) To fight infections and diseases
320. B) Sunlight
321. Which of the following is NOT a function of proteins in living organisms?
• A) Enzyme catalysis
• B) Structural support
• C) Energy storage
• D) Oxygen transport
322. What is the main function of red blood cells?
• A) Carry oxygen from the lungs to the tissues
• B) Fight infections
• C) Aid in clotting
• D) Transport nutrients
323. The human body has how many pairs of chromosomes?
• A) 23
• B) 46
• C) 22
• D) 24
324. Which of the following is a result of a mutation in a gene?
• A) A change in the organism’s phenotype
• B) A decrease in genetic diversity
• C) An increase in the organism's survival
• D) A complete loss of the gene
51
325. Which type of muscle is responsible for involuntary movements?
• A) Skeletal muscle
• B) Smooth muscle
• C) Cardiac muscle
• D) Voluntary muscle
326. The process of meiosis results in the formation of:
• A) Somatic cells
• B) Gametes
• C) Zygotes
• D) Embryos
327. Which part of the cell is responsible for controlling all the activities within the cell?
• A) Mitochondria
• B) Nucleus
• C) Ribosomes
• D) Endoplasmic reticulum
328. Which of the following is a characteristic of both plant and animal cells?
• A) Cell wall
• B) Chloroplasts
• C) Nucleus
• D) Central vacuole
329. What type of biological molecule is an enzyme?
• A) Carbohydrate
• B) Protein
• C) Lipid
• D) Nucleic acid
330. Which of the following is an example of a biome?
• A) Ocean
• B) Forest
• C) Desert
• D) All of the above
331. The process of photosynthesis occurs in which part of the plant cell?
• A) Nucleus
• B) Mitochondria
• C) Chloroplast
• D) Ribosome
332. Which of the following is an example of an autotroph?
• A) Mushroom
• B) Human
• C) Green plant
• D) Lion
333. Which of the following is the correct sequence of events in the process of protein
synthesis?
• A) DNA → mRNA → tRNA → Protein
• B) tRNA → mRNA → DNA → Protein
• C) mRNA → DNA → tRNA → Protein
• D) DNA → tRNA → mRNA → Protein
325. Which type of muscle is responsible for involuntary movements?
• A) Skeletal muscle
• B) Smooth muscle
• C) Cardiac muscle
• D) Voluntary muscle
326. The process of meiosis results in the formation of:
• A) Somatic cells
• B) Gametes
• C) Zygotes
• D) Embryos
327. Which part of the cell is responsible for controlling all the activities within the cell?
• A) Mitochondria
• B) Nucleus
• C) Ribosomes
• D) Endoplasmic reticulum
328. Which of the following is a characteristic of both plant and animal cells?
• A) Cell wall
• B) Chloroplasts
• C) Nucleus
• D) Central vacuole
329. What type of biological molecule is an enzyme?
• A) Carbohydrate
• B) Protein
• C) Lipid
• D) Nucleic acid
330. Which of the following is an example of a biome?
• A) Ocean
• B) Forest
• C) Desert
• D) All of the above
331. The process of photosynthesis occurs in which part of the plant cell?
• A) Nucleus
• B) Mitochondria
• C) Chloroplast
• D) Ribosome
332. Which of the following is an example of an autotroph?
• A) Mushroom
• B) Human
• C) Green plant
• D) Lion
333. Which of the following is the correct sequence of events in the process of protein
synthesis?
• A) DNA → mRNA → tRNA → Protein
• B) tRNA → mRNA → DNA → Protein
• C) mRNA → DNA → tRNA → Protein
• D) DNA → tRNA → mRNA → Protein
52
334. Which of the following hormones is produced by the pancreas to regulate blood sugar
levels?
• A) Insulin
• B) Thyroxine
• C) Adrenaline
• D) Estrogen
335. Which of the following is a characteristic of prokaryotic cells?
• A) Membrane-bound organelles
• B) Nucleus
• C) Circular DNA
• D) Multicellular
336. Which of the following is NOT a part of the human digestive system?
• A) Esophagus
• B) Stomach
• C) Lungs
• D) Pancreas
337. The energy stored in food is a type of:
• A) Kinetic energy
• B) Potential energy
• C) Electrical energy
• D) Heat energy
338. Which of the following statements is true about the theory of evolution?
• A) It explains how new species arise over time
• B) It only applies to animals
• C) It is not supported by fossil evidence
• D) It suggests organisms do not change over time
339. Which of the following is a major component of cell membranes?
• A) Proteins
• B) Carbohydrates
• C) Nucleic acids
• D) Phospholipids
340. Which of the following is true about asexual reproduction?
• A) It involves the fusion of two gametes
• B) It produces offspring that are genetically identical to the parent
• C) It only occurs in multicellular organisms
• D) It requires external fertilization
Answers:
321. C) Energy storage
322. A) Carry oxygen from the lungs to the tissues
323. A) 23
334. Which of the following hormones is produced by the pancreas to regulate blood sugar
levels?
• A) Insulin
• B) Thyroxine
• C) Adrenaline
• D) Estrogen
335. Which of the following is a characteristic of prokaryotic cells?
• A) Membrane-bound organelles
• B) Nucleus
• C) Circular DNA
• D) Multicellular
336. Which of the following is NOT a part of the human digestive system?
• A) Esophagus
• B) Stomach
• C) Lungs
• D) Pancreas
337. The energy stored in food is a type of:
• A) Kinetic energy
• B) Potential energy
• C) Electrical energy
• D) Heat energy
338. Which of the following statements is true about the theory of evolution?
• A) It explains how new species arise over time
• B) It only applies to animals
• C) It is not supported by fossil evidence
• D) It suggests organisms do not change over time
339. Which of the following is a major component of cell membranes?
• A) Proteins
• B) Carbohydrates
• C) Nucleic acids
• D) Phospholipids
340. Which of the following is true about asexual reproduction?
• A) It involves the fusion of two gametes
• B) It produces offspring that are genetically identical to the parent
• C) It only occurs in multicellular organisms
• D) It requires external fertilization
Answers:
321. C) Energy storage
322. A) Carry oxygen from the lungs to the tissues
323. A) 23
53
324. A) A change in the organism’s phenotype
325. B) Smooth muscle
326. B) Gametes
327. B) Nucleus
328. C) Nucleus
329. B) Protein
330. D) All of the above
331. C) Chloroplast
332. C) Green plant
333. A) DNA → mRNA → tRNA → Protein
334. A) Insulin
335. C) Circular DNA
336. C) Lungs
337. B) Potential energy
338. A) It explains how new species arise over time
339. D) Phospholipids
340. B) It produces offspring that are genetically identical to the parent
341. Which of the following is NOT a part of the lymphatic system?
• A) Lymph nodes
• B) Thymus
• C) Heart
• D) Spleen
342. In which part of the cell does cellular respiration occur?
• A) Nucleus
• B) Mitochondria
• C) Chloroplast
• D) Ribosome
343. Which of the following is true about the DNA structure?
• A) It is a single-stranded molecule
• B) It is a double helix
• C) It is made up of amino acids
• D) It is located in the cytoplasm
324. A) A change in the organism’s phenotype
325. B) Smooth muscle
326. B) Gametes
327. B) Nucleus
328. C) Nucleus
329. B) Protein
330. D) All of the above
331. C) Chloroplast
332. C) Green plant
333. A) DNA → mRNA → tRNA → Protein
334. A) Insulin
335. C) Circular DNA
336. C) Lungs
337. B) Potential energy
338. A) It explains how new species arise over time
339. D) Phospholipids
340. B) It produces offspring that are genetically identical to the parent
341. Which of the following is NOT a part of the lymphatic system?
• A) Lymph nodes
• B) Thymus
• C) Heart
• D) Spleen
342. In which part of the cell does cellular respiration occur?
• A) Nucleus
• B) Mitochondria
• C) Chloroplast
• D) Ribosome
343. Which of the following is true about the DNA structure?
• A) It is a single-stranded molecule
• B) It is a double helix
• C) It is made up of amino acids
• D) It is located in the cytoplasm
54
344. What is the role of mRNA in protein synthesis?
• A) It carries amino acids to the ribosome
• B) It copies the genetic code from DNA
• C) It forms the ribosome
• D) It helps in the process of cell division
345. What type of bond holds together the nitrogenous bases in a DNA molecule?
• A) Covalent bonds
• B) Hydrogen bonds
• C) Ionic bonds
• D) Peptide bonds
346. Which of the following best describes a food chain?
• A) A linear sequence of organisms where energy is transferred from one organism to
another
• B) The flow of energy from the sun to plants only
• C) The interactions between producers in an ecosystem
• D) The process of photosynthesis
347. Which of the following processes produces the most ATP in cellular respiration?
• A) Glycolysis
• B) Krebs cycle
• C) Electron transport chain
• D) Fermentation
348. Which of the following is an example of an abiotic factor in an ecosystem?
• A) Plants
• B) Animals
• C) Water
• D) Bacteria
349. Which of the following is true about the process of active transport?
• A) It requires energy
• B) It moves molecules from low to high concentration without energy
• C) It does not require a membrane
• D) It is the same as passive transport
350. What is the function of the ribosomes in a cell?
• A) Synthesize proteins
• B) Store genetic material
• C) Provide energy
• D) Regulate the cell cycle
344. What is the role of mRNA in protein synthesis?
• A) It carries amino acids to the ribosome
• B) It copies the genetic code from DNA
• C) It forms the ribosome
• D) It helps in the process of cell division
345. What type of bond holds together the nitrogenous bases in a DNA molecule?
• A) Covalent bonds
• B) Hydrogen bonds
• C) Ionic bonds
• D) Peptide bonds
346. Which of the following best describes a food chain?
• A) A linear sequence of organisms where energy is transferred from one organism to
another
• B) The flow of energy from the sun to plants only
• C) The interactions between producers in an ecosystem
• D) The process of photosynthesis
347. Which of the following processes produces the most ATP in cellular respiration?
• A) Glycolysis
• B) Krebs cycle
• C) Electron transport chain
• D) Fermentation
348. Which of the following is an example of an abiotic factor in an ecosystem?
• A) Plants
• B) Animals
• C) Water
• D) Bacteria
349. Which of the following is true about the process of active transport?
• A) It requires energy
• B) It moves molecules from low to high concentration without energy
• C) It does not require a membrane
• D) It is the same as passive transport
350. What is the function of the ribosomes in a cell?
• A) Synthesize proteins
• B) Store genetic material
• C) Provide energy
• D) Regulate the cell cycle
55
351. Which of the following is a key factor that determines the rate of photosynthesis in
plants?
• A) Temperature
• B) Size of the plant
• C) Age of the plant
• D) Color of the plant
352. What is the term used to describe a cell’s ability to take in and use substances from its
environment?
• A) Metabolism
• B) Diffusion
• C) Absorption
• D) Homeostasis
353. Which of the following statements is true about dominant and recessive alleles?
• A) Dominant alleles are always expressed, while recessive alleles are only expressed
in the absence of a dominant allele
• B) Recessive alleles are always expressed, while dominant alleles are only expressed
in the absence of a recessive allele
• C) Both alleles are equally likely to be expressed
• D) Dominant and recessive alleles have no impact on an organism’s phenotype
354. Which of the following is an example of a producer in an ecosystem?
• A) Lion
• B) Deer
• C) Grass
• D) Fungus
355. Which of the following is true about the process of respiration in plants?
• A) It occurs only at night
• B) It requires oxygen and produces carbon dioxide
• C) It occurs only in the presence of light
• D) It is the same as photosynthesis
356. Which of the following types of cells contain chloroplasts?
• A) Animal cells
• B) Fungal cells
• C) Plant cells
• D) Bacterial cells
357. The process of converting glucose into energy is called:
• A) Photosynthesis
• B) Respiration
• C) Fermentation
• D) Digestion
351. Which of the following is a key factor that determines the rate of photosynthesis in
plants?
• A) Temperature
• B) Size of the plant
• C) Age of the plant
• D) Color of the plant
352. What is the term used to describe a cell’s ability to take in and use substances from its
environment?
• A) Metabolism
• B) Diffusion
• C) Absorption
• D) Homeostasis
353. Which of the following statements is true about dominant and recessive alleles?
• A) Dominant alleles are always expressed, while recessive alleles are only expressed
in the absence of a dominant allele
• B) Recessive alleles are always expressed, while dominant alleles are only expressed
in the absence of a recessive allele
• C) Both alleles are equally likely to be expressed
• D) Dominant and recessive alleles have no impact on an organism’s phenotype
354. Which of the following is an example of a producer in an ecosystem?
• A) Lion
• B) Deer
• C) Grass
• D) Fungus
355. Which of the following is true about the process of respiration in plants?
• A) It occurs only at night
• B) It requires oxygen and produces carbon dioxide
• C) It occurs only in the presence of light
• D) It is the same as photosynthesis
356. Which of the following types of cells contain chloroplasts?
• A) Animal cells
• B) Fungal cells
• C) Plant cells
• D) Bacterial cells
357. The process of converting glucose into energy is called:
• A) Photosynthesis
• B) Respiration
• C) Fermentation
• D) Digestion
56
358. What is the primary role of the digestive system in humans?
• A) To transport oxygen to cells
• B) To break down food into nutrients that can be absorbed
• C) To regulate temperature
• D) To produce red blood cells
359. The process by which an organism’s body maintains a stable internal environment is
known as:
• A) Adaptation
• B) Metabolism
• C) Homeostasis
• D) Reproduction
360. Which of the following is an example of an adaptation in animals?
• A) The development of wings in birds
• B) The movement of air through the lungs
• C) The ability of plants to photosynthesize
• D) The digestion of food in the stomach
Answers:
341. C) Heart
342. B) Mitochondria
343. B) It is a double helix
344. B) It copies the genetic code from DNA
345. B) Hydrogen bonds
346. A) A linear sequence of organisms where energy is transferred from one organism to
another
347. C) Electron transport chain
348. C) Water
349. A) It requires energy
350. A) Synthesize proteins
351. A) Temperature
352. C) Absorption
353. A) Dominant alleles are always expressed, while recessive alleles are only expressed
in the absence of a dominant allele
358. What is the primary role of the digestive system in humans?
• A) To transport oxygen to cells
• B) To break down food into nutrients that can be absorbed
• C) To regulate temperature
• D) To produce red blood cells
359. The process by which an organism’s body maintains a stable internal environment is
known as:
• A) Adaptation
• B) Metabolism
• C) Homeostasis
• D) Reproduction
360. Which of the following is an example of an adaptation in animals?
• A) The development of wings in birds
• B) The movement of air through the lungs
• C) The ability of plants to photosynthesize
• D) The digestion of food in the stomach
Answers:
341. C) Heart
342. B) Mitochondria
343. B) It is a double helix
344. B) It copies the genetic code from DNA
345. B) Hydrogen bonds
346. A) A linear sequence of organisms where energy is transferred from one organism to
another
347. C) Electron transport chain
348. C) Water
349. A) It requires energy
350. A) Synthesize proteins
351. A) Temperature
352. C) Absorption
353. A) Dominant alleles are always expressed, while recessive alleles are only expressed
in the absence of a dominant allele
57
354. C) Grass
355. B) It requires oxygen and produces carbon dioxide
356. C) Plant cells
357. B) Respiration
358. B) To break down food into nutrients that can be absorbed
359. C) Homeostasis
360. A) The development of wings in birds
361. Which of the following is a function of the lymphatic system?
• A) Transport oxygen
• B) Transport nutrients
• C) Fight infections
• D) Produce hormones
362. What is the role of the small intestine in digestion?
• A) Absorb water
• B) Absorb nutrients
• C) Store food
• D) Produce bile
363. Which of the following is true about asexual reproduction?
• A) It involves the fusion of two gametes
• B) It produces offspring that are genetically identical to the parent
• C) It occurs only in multicellular organisms
• D) It involves sexual differentiation
364. The oxygen we breathe is produced during which of the following processes?
• A) Cellular respiration
• B) Photosynthesis
• C) Fermentation
• D) Transpiration
365. Which of the following is a characteristic of prokaryotic cells?
• A) Presence of a nucleus
• B) Presence of membrane-bound organelles
• C) Circular DNA
• D) Multicellular
366. Which organelle is responsible for producing energy in the form of ATP?
• A) Chloroplast
• B) Ribosome
• C) Mitochondrion
• D) Nucleus
354. C) Grass
355. B) It requires oxygen and produces carbon dioxide
356. C) Plant cells
357. B) Respiration
358. B) To break down food into nutrients that can be absorbed
359. C) Homeostasis
360. A) The development of wings in birds
361. Which of the following is a function of the lymphatic system?
• A) Transport oxygen
• B) Transport nutrients
• C) Fight infections
• D) Produce hormones
362. What is the role of the small intestine in digestion?
• A) Absorb water
• B) Absorb nutrients
• C) Store food
• D) Produce bile
363. Which of the following is true about asexual reproduction?
• A) It involves the fusion of two gametes
• B) It produces offspring that are genetically identical to the parent
• C) It occurs only in multicellular organisms
• D) It involves sexual differentiation
364. The oxygen we breathe is produced during which of the following processes?
• A) Cellular respiration
• B) Photosynthesis
• C) Fermentation
• D) Transpiration
365. Which of the following is a characteristic of prokaryotic cells?
• A) Presence of a nucleus
• B) Presence of membrane-bound organelles
• C) Circular DNA
• D) Multicellular
366. Which organelle is responsible for producing energy in the form of ATP?
• A) Chloroplast
• B) Ribosome
• C) Mitochondrion
• D) Nucleus
58
367. Which of the following is NOT a function of the skeletal system?
• A) Protection of vital organs
• B) Production of blood cells
• C) Storage of minerals
• D) Production of hormones
368. What is the primary function of white blood cells?
• A) Transport oxygen
• B) Fight infections
• C) Transport nutrients
• D) Aid in clotting
369. Which of the following is a major component of a virus?
• A) Ribosomes
• B) Mitochondria
• C) Protein coat
• D) Chloroplasts
370. Which type of cell division is involved in the production of gametes?
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
371. Which of the following structures is responsible for controlling the passage of
substances in and out of the cell?
• A) Nucleus
• B) Ribosome
• C) Cell membrane
• D) Endoplasmic reticulum
372. What is the primary function of the circulatory system?
• A) Transport oxygen and nutrients
• B) Produce hormones
• C) Breakdown food
• D) Fight infections
373. Which of the following is an example of a decomposer in an ecosystem?
• A) Mushroom
• B) Grass
• C) Lion
• D) Deer
374. Which of the following is a function of the pancreas?
• A) Produce bile
• B) Regulate blood sugar levels
• C) Absorb nutrients
• D) Produce red blood cells
375. Which of the following is a process that increases genetic variation in a population?
• A) Asexual reproduction
• B) Sexual reproduction
• C) Binary fission
• D) Cloning
376. Which of the following is the main purpose of the process of transpiration in plants?
• A) Transport nutrients
• B) Release oxygen
• C) Transport water and minerals
• D) Release carbon dioxide
367. Which of the following is NOT a function of the skeletal system?
• A) Protection of vital organs
• B) Production of blood cells
• C) Storage of minerals
• D) Production of hormones
368. What is the primary function of white blood cells?
• A) Transport oxygen
• B) Fight infections
• C) Transport nutrients
• D) Aid in clotting
369. Which of the following is a major component of a virus?
• A) Ribosomes
• B) Mitochondria
• C) Protein coat
• D) Chloroplasts
370. Which type of cell division is involved in the production of gametes?
• A) Mitosis
• B) Meiosis
• C) Binary fission
• D) Budding
371. Which of the following structures is responsible for controlling the passage of
substances in and out of the cell?
• A) Nucleus
• B) Ribosome
• C) Cell membrane
• D) Endoplasmic reticulum
372. What is the primary function of the circulatory system?
• A) Transport oxygen and nutrients
• B) Produce hormones
• C) Breakdown food
• D) Fight infections
373. Which of the following is an example of a decomposer in an ecosystem?
• A) Mushroom
• B) Grass
• C) Lion
• D) Deer
374. Which of the following is a function of the pancreas?
• A) Produce bile
• B) Regulate blood sugar levels
• C) Absorb nutrients
• D) Produce red blood cells
375. Which of the following is a process that increases genetic variation in a population?
• A) Asexual reproduction
• B) Sexual reproduction
• C) Binary fission
• D) Cloning
376. Which of the following is the main purpose of the process of transpiration in plants?
• A) Transport nutrients
• B) Release oxygen
• C) Transport water and minerals
• D) Release carbon dioxide
59
377. Which of the following is a product of the light-dependent reactions of
photosynthesis?
• A) Glucose
• B) Oxygen
• C) Water
• D) Carbon dioxide
378. Which of the following is true about the process of mitosis?
• A) It produces two genetically identical daughter cells
• B) It occurs only in prokaryotic cells
• C) It results in the formation of four daughter cells
• D) It is involved in the formation of gametes
379. What is the main function of the immune system?
• A) To digest food
• B) To produce red blood cells
• C) To protect the body from pathogens
• D) To regulate body temperature
380. Which of the following is a characteristic of all living organisms?
• A) They all have a backbone
• B) They can all reproduce
• C) They are all multicellular
• D) They all have chloroplasts
Answers:
361. C) Fight infections
362. B) Absorb nutrients
363. B) It produces offspring that are genetically identical to the parent
364. B) Photosynthesis
365. C) Circular DNA
366. C) Mitochondrion
367. D) Production of hormones
368. B) Fight infections
369. C) Protein coat
370. B) Meiosis
371. C) Cell membrane
372. A) Transport oxygen and nutrients
377. Which of the following is a product of the light-dependent reactions of
photosynthesis?
• A) Glucose
• B) Oxygen
• C) Water
• D) Carbon dioxide
378. Which of the following is true about the process of mitosis?
• A) It produces two genetically identical daughter cells
• B) It occurs only in prokaryotic cells
• C) It results in the formation of four daughter cells
• D) It is involved in the formation of gametes
379. What is the main function of the immune system?
• A) To digest food
• B) To produce red blood cells
• C) To protect the body from pathogens
• D) To regulate body temperature
380. Which of the following is a characteristic of all living organisms?
• A) They all have a backbone
• B) They can all reproduce
• C) They are all multicellular
• D) They all have chloroplasts
Answers:
361. C) Fight infections
362. B) Absorb nutrients
363. B) It produces offspring that are genetically identical to the parent
364. B) Photosynthesis
365. C) Circular DNA
366. C) Mitochondrion
367. D) Production of hormones
368. B) Fight infections
369. C) Protein coat
370. B) Meiosis
371. C) Cell membrane
372. A) Transport oxygen and nutrients
60
373. A) Mushroom
374. B) Regulate blood sugar levels
375. B) Sexual reproduction
376. C) Transport water and minerals
377. B) Oxygen
378. A) It produces two genetically identical daughter cells
379. C) To protect the body from pathogens
380. B) They can all reproduce
381. Which of the following is the correct sequence of the phases of the cell cycle?
• A) Prophase, Metaphase, Anaphase, Telophase, Interphase
• B) Interphase, Prophase, Metaphase, Anaphase, Telophase
• C) Metaphase, Interphase, Prophase, Anaphase, Telophase
• D) Interphase, Telophase, Metaphase, Prophase, Anaphase
382. Which part of the brain controls balance and coordination?
• A) Cerebellum
• B) Cerebrum
• C) Medulla oblongata
• D) Hypothalamus
383. Which of the following structures is responsible for producing insulin?
• A) Liver
• B) Pancreas
• C) Kidneys
• D) Spleen
384. Which of the following organisms is an example of an amphibian?
• A) Frog
• B) Snake
• C) Crocodile
• D) Lizard
385. What type of immunity is acquired through vaccination?
• A) Innate immunity
• B) Passive immunity
• C) Active immunity
• D) Adaptive immunity
386. Which of the following is NOT a characteristic of mammals?
• A) Warm-blooded
• B) Have hair or fur
• C) Lay eggs
• D) Have live births
373. A) Mushroom
374. B) Regulate blood sugar levels
375. B) Sexual reproduction
376. C) Transport water and minerals
377. B) Oxygen
378. A) It produces two genetically identical daughter cells
379. C) To protect the body from pathogens
380. B) They can all reproduce
381. Which of the following is the correct sequence of the phases of the cell cycle?
• A) Prophase, Metaphase, Anaphase, Telophase, Interphase
• B) Interphase, Prophase, Metaphase, Anaphase, Telophase
• C) Metaphase, Interphase, Prophase, Anaphase, Telophase
• D) Interphase, Telophase, Metaphase, Prophase, Anaphase
382. Which part of the brain controls balance and coordination?
• A) Cerebellum
• B) Cerebrum
• C) Medulla oblongata
• D) Hypothalamus
383. Which of the following structures is responsible for producing insulin?
• A) Liver
• B) Pancreas
• C) Kidneys
• D) Spleen
384. Which of the following organisms is an example of an amphibian?
• A) Frog
• B) Snake
• C) Crocodile
• D) Lizard
385. What type of immunity is acquired through vaccination?
• A) Innate immunity
• B) Passive immunity
• C) Active immunity
• D) Adaptive immunity
386. Which of the following is NOT a characteristic of mammals?
• A) Warm-blooded
• B) Have hair or fur
• C) Lay eggs
• D) Have live births
61
387. Which of the following is the smallest unit of life?
• A) Organ
• B) Tissue
• C) Cell
• D) Organism
388. The process of protein synthesis occurs in which part of the cell?
• A) Nucleus
• B) Mitochondria
• C) Ribosomes
• D) Chloroplast
389. Which of the following is an example of a producer in an ecosystem?
• A) Lion
• B) Deer
• C) Grass
• D) Mushroom
390. Which of the following is the term for the transfer of heat through electromagnetic
waves?
• A) Convection
• B) Conduction
• C) Radiation
• D) Evaporation
391. Which of the following is responsible for carrying oxygen in the blood?
• A) Platelets
• B) White blood cells
• C) Red blood cells
• D) Plasma
392. What is the function of the chloroplasts in plant cells?
• A) Store nutrients
• B) Produce energy
• C) Perform photosynthesis
• D) Store genetic material
393. Which of the following is true about the process of mitosis?
• A) It results in four genetically distinct daughter cells
• B) It is involved in growth and repair
• C) It occurs only in prokaryotic cells
• D) It produces genetically different cells
394. What is the name of the process by which plants release water vapor into the
atmosphere?
• A) Respiration
• B) Transpiration
• C) Germination
• D) Pollination
387. Which of the following is the smallest unit of life?
• A) Organ
• B) Tissue
• C) Cell
• D) Organism
388. The process of protein synthesis occurs in which part of the cell?
• A) Nucleus
• B) Mitochondria
• C) Ribosomes
• D) Chloroplast
389. Which of the following is an example of a producer in an ecosystem?
• A) Lion
• B) Deer
• C) Grass
• D) Mushroom
390. Which of the following is the term for the transfer of heat through electromagnetic
waves?
• A) Convection
• B) Conduction
• C) Radiation
• D) Evaporation
391. Which of the following is responsible for carrying oxygen in the blood?
• A) Platelets
• B) White blood cells
• C) Red blood cells
• D) Plasma
392. What is the function of the chloroplasts in plant cells?
• A) Store nutrients
• B) Produce energy
• C) Perform photosynthesis
• D) Store genetic material
393. Which of the following is true about the process of mitosis?
• A) It results in four genetically distinct daughter cells
• B) It is involved in growth and repair
• C) It occurs only in prokaryotic cells
• D) It produces genetically different cells
394. What is the name of the process by which plants release water vapor into the
atmosphere?
• A) Respiration
• B) Transpiration
• C) Germination
• D) Pollination
62
395. Which of the following is a characteristic of all living organisms?
• A) They all have a nucleus
• B) They all have the ability to move
• C) They all require energy to function
• D) They all reproduce sexually
396. Which of the following structures is responsible for controlling the entry and exit of
materials in a plant cell?
• A) Chloroplast
• B) Nucleus
• C) Cell membrane
• D) Vacuole
397. Which of the following is an example of a mutualistic relationship?
• A) A lion hunting a zebra
• B) A bird eating insects off a buffalo
• C) A parasite feeding off its host
• D) A fox stealing food from a rabbit
398. Which of the following is a function of the digestive system?
• A) Produce insulin
• B) Break down food into nutrients
• C) Transport oxygen
• D) Regulate body temperature
399. Which of the following best describes a decomposer?
• A) Organisms that eat primary producers
• B) Organisms that recycle nutrients by breaking down dead organisms
• C) Organisms that consume herbivores
• D) Organisms that photosynthesize
400. Which of the following is a component of the immune system?
• A) Red blood cells
• B) Platelets
• C) White blood cells
• D) Nerve cells
Answers:
381. B) Interphase, Prophase, Metaphase, Anaphase, Telophase
382. A) Cerebellum
383. B) Pancreas
384. A) Frog
395. Which of the following is a characteristic of all living organisms?
• A) They all have a nucleus
• B) They all have the ability to move
• C) They all require energy to function
• D) They all reproduce sexually
396. Which of the following structures is responsible for controlling the entry and exit of
materials in a plant cell?
• A) Chloroplast
• B) Nucleus
• C) Cell membrane
• D) Vacuole
397. Which of the following is an example of a mutualistic relationship?
• A) A lion hunting a zebra
• B) A bird eating insects off a buffalo
• C) A parasite feeding off its host
• D) A fox stealing food from a rabbit
398. Which of the following is a function of the digestive system?
• A) Produce insulin
• B) Break down food into nutrients
• C) Transport oxygen
• D) Regulate body temperature
399. Which of the following best describes a decomposer?
• A) Organisms that eat primary producers
• B) Organisms that recycle nutrients by breaking down dead organisms
• C) Organisms that consume herbivores
• D) Organisms that photosynthesize
400. Which of the following is a component of the immune system?
• A) Red blood cells
• B) Platelets
• C) White blood cells
• D) Nerve cells
Answers:
381. B) Interphase, Prophase, Metaphase, Anaphase, Telophase
382. A) Cerebellum
383. B) Pancreas
384. A) Frog
63
385. C) Active immunity
386. C) Lay eggs
387. C) Cell
388. C) Ribosomes
389. C) Grass
390. C) Radiation
391. C) Red blood cells
392. C) Perform photosynthesis
393. B) It is involved in growth and repair
394. B) Transpiration
395. C) They all require energy to function
396. C) Cell membrane
397. B) A bird eating insects off a buffalo
398. B) Break down food into nutrients
399. B) Organisms that recycle nutrients by breaking down dead organisms
400. C) White blood cells
401. Which of the following is the main function of the roots in plants?
• A) To absorb sunlight
• B) To anchor the plant and absorb water and minerals
• C) To produce seeds
• D) To store energy
402. Which of the following is the primary energy source for cellular activities?
• A) Glucose
• B) Oxygen
• C) Water
• D) Carbon dioxide
403. Which of the following best describes the function of the endoplasmic reticulum
(ER)?
• A) Stores energy
• B) Synthesizes proteins and lipids
• C) Controls cell division
• D) Produces ATP
385. C) Active immunity
386. C) Lay eggs
387. C) Cell
388. C) Ribosomes
389. C) Grass
390. C) Radiation
391. C) Red blood cells
392. C) Perform photosynthesis
393. B) It is involved in growth and repair
394. B) Transpiration
395. C) They all require energy to function
396. C) Cell membrane
397. B) A bird eating insects off a buffalo
398. B) Break down food into nutrients
399. B) Organisms that recycle nutrients by breaking down dead organisms
400. C) White blood cells
401. Which of the following is the main function of the roots in plants?
• A) To absorb sunlight
• B) To anchor the plant and absorb water and minerals
• C) To produce seeds
• D) To store energy
402. Which of the following is the primary energy source for cellular activities?
• A) Glucose
• B) Oxygen
• C) Water
• D) Carbon dioxide
403. Which of the following best describes the function of the endoplasmic reticulum
(ER)?
• A) Stores energy
• B) Synthesizes proteins and lipids
• C) Controls cell division
• D) Produces ATP
64
404. Which of the following is true about photosynthesis?
• A) It produces glucose and oxygen
• B) It produces carbon dioxide and water
• C) It produces glucose and carbon dioxide
• D) It produces oxygen and nitrogen
405. Which of the following is NOT a type of muscle tissue?
• A) Skeletal
• B) Cardiac
• C) Epithelial
• D) Smooth
406. Which of the following organ systems is responsible for producing offspring?
• A) Digestive system
• B) Reproductive system
• C) Nervous system
• D) Circulatory system
407. What is the primary function of the nervous system?
• A) To produce hormones
• B) To control and coordinate body activities
• C) To transport oxygen
• D) To provide structure
408. Which of the following is true about anaerobic respiration?
• A) It occurs in the presence of oxygen
• B) It produces more ATP than aerobic respiration
• C) It occurs in the absence of oxygen
• D) It only occurs in plant cells
409. What is the function of the Golgi apparatus?
• A) Synthesize proteins
• B) Package and transport proteins and lipids
• C) Store genetic information
• D) Maintain cell shape
410. What is the process by which green plants convert light energy into chemical energy?
• A) Respiration
• B) Transpiration
• C) Photosynthesis
• D) Fermentation
404. Which of the following is true about photosynthesis?
• A) It produces glucose and oxygen
• B) It produces carbon dioxide and water
• C) It produces glucose and carbon dioxide
• D) It produces oxygen and nitrogen
405. Which of the following is NOT a type of muscle tissue?
• A) Skeletal
• B) Cardiac
• C) Epithelial
• D) Smooth
406. Which of the following organ systems is responsible for producing offspring?
• A) Digestive system
• B) Reproductive system
• C) Nervous system
• D) Circulatory system
407. What is the primary function of the nervous system?
• A) To produce hormones
• B) To control and coordinate body activities
• C) To transport oxygen
• D) To provide structure
408. Which of the following is true about anaerobic respiration?
• A) It occurs in the presence of oxygen
• B) It produces more ATP than aerobic respiration
• C) It occurs in the absence of oxygen
• D) It only occurs in plant cells
409. What is the function of the Golgi apparatus?
• A) Synthesize proteins
• B) Package and transport proteins and lipids
• C) Store genetic information
• D) Maintain cell shape
410. What is the process by which green plants convert light energy into chemical energy?
• A) Respiration
• B) Transpiration
• C) Photosynthesis
• D) Fermentation
65
411. Which of the following is an example of a heterotroph?
• A) Plant
• B) Algae
• C) Animal
• D) Bacteria
412. Which of the following is NOT a characteristic of viruses?
• A) They can replicate in host cells
• B) They are made of DNA or RNA
• C) They can reproduce on their own
• D) They do not have cellular structure
413. Which part of the flower is responsible for attracting pollinators?
• A) Pistil
• B) Petals
• C) Stamen
• D) Ovary
414. What is the primary function of the liver?
• A) Filter blood and produce bile
• B) Produce insulin
• C) Produce digestive enzymes
• D) Absorb nutrients
415. Which of the following is true about the process of fertilization in humans?
• A) It occurs outside the body
• B) It involves the fusion of a sperm and an egg
• C) It results in the production of gametes
• D) It occurs during menstruation
416. Which of the following is an example of a mutualistic relationship?
• A) A bee and a flower
• B) A lion and a zebra
• C) A tapeworm and its host
• D) A fox and a rabbit
417. Which of the following is true about the process of osmosis?
• A) It requires energy
• B) It is the movement of water from an area of low to high concentration
• C) It involves the movement of solutes
• D) It does not require energy
411. Which of the following is an example of a heterotroph?
• A) Plant
• B) Algae
• C) Animal
• D) Bacteria
412. Which of the following is NOT a characteristic of viruses?
• A) They can replicate in host cells
• B) They are made of DNA or RNA
• C) They can reproduce on their own
• D) They do not have cellular structure
413. Which part of the flower is responsible for attracting pollinators?
• A) Pistil
• B) Petals
• C) Stamen
• D) Ovary
414. What is the primary function of the liver?
• A) Filter blood and produce bile
• B) Produce insulin
• C) Produce digestive enzymes
• D) Absorb nutrients
415. Which of the following is true about the process of fertilization in humans?
• A) It occurs outside the body
• B) It involves the fusion of a sperm and an egg
• C) It results in the production of gametes
• D) It occurs during menstruation
416. Which of the following is an example of a mutualistic relationship?
• A) A bee and a flower
• B) A lion and a zebra
• C) A tapeworm and its host
• D) A fox and a rabbit
417. Which of the following is true about the process of osmosis?
• A) It requires energy
• B) It is the movement of water from an area of low to high concentration
• C) It involves the movement of solutes
• D) It does not require energy
66
418. Which of the following is a function of the circulatory system?
• A) Transport oxygen and nutrients
• B) Break down food
• C) Remove waste products from the body
• D) Produce hormones
419. Which of the following is NOT a function of the skeletal system?
• A) Protection of vital organs
• B) Storage of minerals
• C) Production of hormones
• D) Production of blood cells
420. What is the process by which organisms make energy from food?
• A) Photosynthesis
• B) Cellular respiration
• C) Fermentation
• D) Transpiration
Answers:
401. B) To anchor the plant and absorb water and minerals
402. A) Glucose
403. B) Synthesizes proteins and lipids
404. A) It produces glucose and oxygen
405. C) Epithelial
406. B) Reproductive system
407. B) To control and coordinate body activities
408. C) It occurs in the absence of oxygen
409. B) Package and transport proteins and lipids
410. C) Photosynthesis
411. C) Animal
412. C) They can reproduce on their own
413. B) Petals
414. A) Filter blood and produce bile
415. B) It involves the fusion of a sperm and an egg
416. A) A bee and a flower
417. D) It does not require energy
418. Which of the following is a function of the circulatory system?
• A) Transport oxygen and nutrients
• B) Break down food
• C) Remove waste products from the body
• D) Produce hormones
419. Which of the following is NOT a function of the skeletal system?
• A) Protection of vital organs
• B) Storage of minerals
• C) Production of hormones
• D) Production of blood cells
420. What is the process by which organisms make energy from food?
• A) Photosynthesis
• B) Cellular respiration
• C) Fermentation
• D) Transpiration
Answers:
401. B) To anchor the plant and absorb water and minerals
402. A) Glucose
403. B) Synthesizes proteins and lipids
404. A) It produces glucose and oxygen
405. C) Epithelial
406. B) Reproductive system
407. B) To control and coordinate body activities
408. C) It occurs in the absence of oxygen
409. B) Package and transport proteins and lipids
410. C) Photosynthesis
411. C) Animal
412. C) They can reproduce on their own
413. B) Petals
414. A) Filter blood and produce bile
415. B) It involves the fusion of a sperm and an egg
416. A) A bee and a flower
417. D) It does not require energy
67
418. A) Transport oxygen and nutrients
419. C) Production of hormones
420. B) Cellular respiration
421. Which of the following is the primary function of chlorophyll in photosynthesis?
• A) Absorb light energy
• B) Transport water
• C) Produce glucose
• D) Release oxygen
422. Which of the following is true about the process of meiosis?
• A) It produces genetically identical cells
• B) It occurs only in somatic cells
• C) It results in four non-identical daughter cells
• D) It is involved in asexual reproduction
423. What is the function of the vacuole in plant cells?
• A) Store food and water
• B) Produce energy
• C) Control cell division
• D) Synthesize proteins
424. Which of the following types of blood vessels carries oxygen-rich blood from the
heart to the body?
• A) Veins
• B) Arteries
• C) Capillaries
• D) Venules
425. Which of the following is the function of ribosomes?
• A) Produce energy
• B) Synthesize proteins
• C) Store genetic information
• D) Transport materials
426. Which of the following is an example of a carnivore?
• A) Cow
• B) Eagle
• C) Bear
• D) Frog
427. Which of the following is true about the process of diffusion?
• A) It requires energy
• B) It involves the movement of water from an area of low to high concentration
• C) It involves the movement of solutes from an area of high to low concentration
• D) It occurs only in plant cells
418. A) Transport oxygen and nutrients
419. C) Production of hormones
420. B) Cellular respiration
421. Which of the following is the primary function of chlorophyll in photosynthesis?
• A) Absorb light energy
• B) Transport water
• C) Produce glucose
• D) Release oxygen
422. Which of the following is true about the process of meiosis?
• A) It produces genetically identical cells
• B) It occurs only in somatic cells
• C) It results in four non-identical daughter cells
• D) It is involved in asexual reproduction
423. What is the function of the vacuole in plant cells?
• A) Store food and water
• B) Produce energy
• C) Control cell division
• D) Synthesize proteins
424. Which of the following types of blood vessels carries oxygen-rich blood from the
heart to the body?
• A) Veins
• B) Arteries
• C) Capillaries
• D) Venules
425. Which of the following is the function of ribosomes?
• A) Produce energy
• B) Synthesize proteins
• C) Store genetic information
• D) Transport materials
426. Which of the following is an example of a carnivore?
• A) Cow
• B) Eagle
• C) Bear
• D) Frog
427. Which of the following is true about the process of diffusion?
• A) It requires energy
• B) It involves the movement of water from an area of low to high concentration
• C) It involves the movement of solutes from an area of high to low concentration
• D) It occurs only in plant cells
68
428. Which of the following organelles is responsible for cellular respiration?
• A) Chloroplast
• B) Mitochondrion
• C) Nucleus
• D) Golgi apparatus
429. Which of the following is an example of a heterotrophic organism?
• A) Mushroom
• B) Algae
• C) Tree
• D) Cow
430. What is the main function of the nervous system?
• A) To digest food
• B) To coordinate body activities
• C) To transport oxygen
• D) To store energy
431. Which of the following is true about the structure of DNA?
• A) It is a single-stranded molecule
• B) It is composed of amino acids
• C) It has a double-helix structure
• D) It is found only in the nucleus of the cell
432. Which of the following is a function of the large intestine?
• A) Absorb water and electrolytes
• B) Produce digestive enzymes
• C) Store bile
• D) Break down proteins
433. Which of the following is true about the process of respiration?
• A) It occurs only in plants
• B) It requires oxygen and produces glucose
• C) It releases energy from glucose
• D) It occurs only in animals
434. Which of the following is a characteristic of amphibians?
• A) They are cold-blooded
• B) They have feathers
• C) They have scales
• D) They give live birth
435. Which of the following is true about viruses?
• A) They are made of cells
• B) They can reproduce on their own
• C) They require a host cell to reproduce
• D) They are composed only of proteins
428. Which of the following organelles is responsible for cellular respiration?
• A) Chloroplast
• B) Mitochondrion
• C) Nucleus
• D) Golgi apparatus
429. Which of the following is an example of a heterotrophic organism?
• A) Mushroom
• B) Algae
• C) Tree
• D) Cow
430. What is the main function of the nervous system?
• A) To digest food
• B) To coordinate body activities
• C) To transport oxygen
• D) To store energy
431. Which of the following is true about the structure of DNA?
• A) It is a single-stranded molecule
• B) It is composed of amino acids
• C) It has a double-helix structure
• D) It is found only in the nucleus of the cell
432. Which of the following is a function of the large intestine?
• A) Absorb water and electrolytes
• B) Produce digestive enzymes
• C) Store bile
• D) Break down proteins
433. Which of the following is true about the process of respiration?
• A) It occurs only in plants
• B) It requires oxygen and produces glucose
• C) It releases energy from glucose
• D) It occurs only in animals
434. Which of the following is a characteristic of amphibians?
• A) They are cold-blooded
• B) They have feathers
• C) They have scales
• D) They give live birth
435. Which of the following is true about viruses?
• A) They are made of cells
• B) They can reproduce on their own
• C) They require a host cell to reproduce
• D) They are composed only of proteins
69
436. Which of the following is a function of the circulatory system?
• A) Transport hormones
• B) Digest food
• C) Produce white blood cells
• D) Filter waste from the blood
437. Which of the following is an example of an organ in the human body?
• A) Bone
• B) Skin
• C) Heart
• D) Blood
438. Which of the following is the process by which plants release oxygen?
• A) Transpiration
• B) Germination
• C) Photosynthesis
• D) Respiration
439. Which of the following is an example of a primary consumer?
• A) Deer
• B) Lion
• C) Plant
• D) Fungus
440. Which of the following is NOT a type of connective tissue?
• A) Bone
• B) Blood
• C) Muscle
• D) Cartilage
Answers:
421. A) Absorb light energy
422. C) It results in four non-identical daughter cells
423. A) Store food and water
424. B) Arteries
425. B) Synthesize proteins
426. B) Eagle
427. C) It involves the movement of solutes from an area of high to low concentration
428. B) Mitochondrion
429. D) Cow
430. B) To coordinate body activities
431. C) It has a double-helix structure
432. A) Absorb water and electrolytes
433. C) It releases energy from glucose
436. Which of the following is a function of the circulatory system?
• A) Transport hormones
• B) Digest food
• C) Produce white blood cells
• D) Filter waste from the blood
437. Which of the following is an example of an organ in the human body?
• A) Bone
• B) Skin
• C) Heart
• D) Blood
438. Which of the following is the process by which plants release oxygen?
• A) Transpiration
• B) Germination
• C) Photosynthesis
• D) Respiration
439. Which of the following is an example of a primary consumer?
• A) Deer
• B) Lion
• C) Plant
• D) Fungus
440. Which of the following is NOT a type of connective tissue?
• A) Bone
• B) Blood
• C) Muscle
• D) Cartilage
Answers:
421. A) Absorb light energy
422. C) It results in four non-identical daughter cells
423. A) Store food and water
424. B) Arteries
425. B) Synthesize proteins
426. B) Eagle
427. C) It involves the movement of solutes from an area of high to low concentration
428. B) Mitochondrion
429. D) Cow
430. B) To coordinate body activities
431. C) It has a double-helix structure
432. A) Absorb water and electrolytes
433. C) It releases energy from glucose
70
434. A) They are cold-blooded
435. C) They require a host cell to reproduce
436. A) Transport hormones
437. C) Heart
438. C) Photosynthesis
439. A) Deer
440. C) Muscle
441. What is the primary function of the xylem in plants?
• A) Transporting water and minerals
• B) Transporting sugars
• C) Carrying out photosynthesis
• D) Releasing oxygen
442. Which of the following best describes the process of diffusion?
• A) Movement of molecules from low to high concentration
• B) Movement of molecules from high to low concentration
• C) Movement of water only
• D) Requires energy to occur
443. What is the site of gas exchange in human lungs?
• A) Trachea
• B) Bronchi
• C) Alveoli
• D) Diaphragm
444. Which of the following is an example of an endothermic reaction in biology?
• A) Cellular respiration
• B) Digestion of food
• C) Photosynthesis
• D) Fermentation
445. What is the function of the myelin sheath in neurons?
• A) Slows down nerve impulses
• B) Protects the cell body
• C) Speeds up nerve impulses
• D) Produces neurotransmitters
446. Which of the following best describes an ecosystem?
• A) A group of similar organisms
• B) Interaction between living and non-living things in an environment
• C) A community of plants only
• D) A specific species in a habitat
434. A) They are cold-blooded
435. C) They require a host cell to reproduce
436. A) Transport hormones
437. C) Heart
438. C) Photosynthesis
439. A) Deer
440. C) Muscle
441. What is the primary function of the xylem in plants?
• A) Transporting water and minerals
• B) Transporting sugars
• C) Carrying out photosynthesis
• D) Releasing oxygen
442. Which of the following best describes the process of diffusion?
• A) Movement of molecules from low to high concentration
• B) Movement of molecules from high to low concentration
• C) Movement of water only
• D) Requires energy to occur
443. What is the site of gas exchange in human lungs?
• A) Trachea
• B) Bronchi
• C) Alveoli
• D) Diaphragm
444. Which of the following is an example of an endothermic reaction in biology?
• A) Cellular respiration
• B) Digestion of food
• C) Photosynthesis
• D) Fermentation
445. What is the function of the myelin sheath in neurons?
• A) Slows down nerve impulses
• B) Protects the cell body
• C) Speeds up nerve impulses
• D) Produces neurotransmitters
446. Which of the following best describes an ecosystem?
• A) A group of similar organisms
• B) Interaction between living and non-living things in an environment
• C) A community of plants only
• D) A specific species in a habitat
71
447. What is the function of the small intestine in the digestive system?
• A) Absorbing nutrients
• B) Breaking down proteins
• C) Producing enzymes
• D) Storing bile
448. Which part of the cell contains genetic material?
• A) Cytoplasm
• B) Nucleus
• C) Ribosome
• D) Cell membrane
449. Which type of joint is found in the shoulder?
• A) Hinge joint
• B) Ball and socket joint
• C) Fixed joint
• D) Pivot joint
450. Which of the following hormones is responsible for regulating metabolism?
• A) Insulin
• B) Thyroxine
• C) Adrenaline
• D) Testosterone
451. Which gas is required for aerobic respiration?
• A) Oxygen
• B) Carbon dioxide
• C) Nitrogen
• D) Hydrogen
452. What is the main function of the stomata in plant leaves?
• A) Absorb water
• B) Release oxygen and take in carbon dioxide
• C) Store glucose
• D) Support the plant structure
453. Which organ in the human body produces bile?
• A) Stomach
• B) Liver
• C) Pancreas
• D) Small intestine
454. What is the function of red blood cells?
• A) To fight infections
• B) To carry oxygen
• C) To clot blood
• D) To break down waste
447. What is the function of the small intestine in the digestive system?
• A) Absorbing nutrients
• B) Breaking down proteins
• C) Producing enzymes
• D) Storing bile
448. Which part of the cell contains genetic material?
• A) Cytoplasm
• B) Nucleus
• C) Ribosome
• D) Cell membrane
449. Which type of joint is found in the shoulder?
• A) Hinge joint
• B) Ball and socket joint
• C) Fixed joint
• D) Pivot joint
450. Which of the following hormones is responsible for regulating metabolism?
• A) Insulin
• B) Thyroxine
• C) Adrenaline
• D) Testosterone
451. Which gas is required for aerobic respiration?
• A) Oxygen
• B) Carbon dioxide
• C) Nitrogen
• D) Hydrogen
452. What is the main function of the stomata in plant leaves?
• A) Absorb water
• B) Release oxygen and take in carbon dioxide
• C) Store glucose
• D) Support the plant structure
453. Which organ in the human body produces bile?
• A) Stomach
• B) Liver
• C) Pancreas
• D) Small intestine
454. What is the function of red blood cells?
• A) To fight infections
• B) To carry oxygen
• C) To clot blood
• D) To break down waste
72
455. Which of the following best describes a decomposer?
• A) An organism that produces its own food
• B) An organism that breaks down dead matter
• C) An organism that hunts for food
• D) An organism that lives inside another organism
456. Which type of reproduction results in offspring that are genetically identical to the
parent?
• A) Sexual reproduction
• B) Asexual reproduction
• C) External fertilization
• D) Internal fertilization
457. Which of the following is a characteristic of all mammals?
• A) They lay eggs
• B) They have scales
• C) They produce milk
• D) They breathe through gills
458. Which organ system is responsible for removing waste from the body?
• A) Digestive system
• B) Circulatory system
• C) Excretory system
• D) Nervous system
459. What is the function of the chloroplast in plant cells?
• A) Store energy
• B) Perform photosynthesis
• C) Break down food
• D) Transport nutrients
460. Which of the following best describes homeostasis?
• A) The breakdown of food
• B) The regulation of internal conditions in an organism
• C) The movement of water across a membrane
• D) The process of cell division
Answers:
441. A) Transporting water and minerals
442. B) Movement of molecules from high to low concentration
443. C) Alveoli
444. C) Photosynthesis
445. C) Speeds up nerve impulses
446. B) Interaction between living and non-living things in an environment
455. Which of the following best describes a decomposer?
• A) An organism that produces its own food
• B) An organism that breaks down dead matter
• C) An organism that hunts for food
• D) An organism that lives inside another organism
456. Which type of reproduction results in offspring that are genetically identical to the
parent?
• A) Sexual reproduction
• B) Asexual reproduction
• C) External fertilization
• D) Internal fertilization
457. Which of the following is a characteristic of all mammals?
• A) They lay eggs
• B) They have scales
• C) They produce milk
• D) They breathe through gills
458. Which organ system is responsible for removing waste from the body?
• A) Digestive system
• B) Circulatory system
• C) Excretory system
• D) Nervous system
459. What is the function of the chloroplast in plant cells?
• A) Store energy
• B) Perform photosynthesis
• C) Break down food
• D) Transport nutrients
460. Which of the following best describes homeostasis?
• A) The breakdown of food
• B) The regulation of internal conditions in an organism
• C) The movement of water across a membrane
• D) The process of cell division
Answers:
441. A) Transporting water and minerals
442. B) Movement of molecules from high to low concentration
443. C) Alveoli
444. C) Photosynthesis
445. C) Speeds up nerve impulses
446. B) Interaction between living and non-living things in an environment
73
447. A) Absorbing nutrients
448. B) Nucleus
449. B) Ball and socket joint
450. B) Thyroxine
451. A) Oxygen
452. B) Release oxygen and take in carbon dioxide
453. B) Liver
454. B) To carry oxygen
455. B) An organism that breaks down dead matter
456. B) Asexual reproduction
457. C) They produce milk
458. C) Excretory system
459. B) Perform photosynthesis
460. B) The regulation of internal conditions in an organism
461. Which of the following is the main purpose of the process of transpiration in plants?
• A) To produce glucose
• B) To absorb nutrients from the soil
• C) To transport water and nutrients to the leaves
• D) To release water vapor into the atmosphere
462. Which of the following is true about the process of photosynthesis?
• A) It occurs in the mitochondria
• B) It converts light energy into chemical energy
• C) It occurs only in the dark
• D) It releases carbon dioxide and consumes oxygen
463. Which of the following structures is responsible for protecting the DNA in a cell?
• A) Nucleus
• B) Ribosome
• C) Mitochondrion
• D) Cytoplasm
447. A) Absorbing nutrients
448. B) Nucleus
449. B) Ball and socket joint
450. B) Thyroxine
451. A) Oxygen
452. B) Release oxygen and take in carbon dioxide
453. B) Liver
454. B) To carry oxygen
455. B) An organism that breaks down dead matter
456. B) Asexual reproduction
457. C) They produce milk
458. C) Excretory system
459. B) Perform photosynthesis
460. B) The regulation of internal conditions in an organism
461. Which of the following is the main purpose of the process of transpiration in plants?
• A) To produce glucose
• B) To absorb nutrients from the soil
• C) To transport water and nutrients to the leaves
• D) To release water vapor into the atmosphere
462. Which of the following is true about the process of photosynthesis?
• A) It occurs in the mitochondria
• B) It converts light energy into chemical energy
• C) It occurs only in the dark
• D) It releases carbon dioxide and consumes oxygen
463. Which of the following structures is responsible for protecting the DNA in a cell?
• A) Nucleus
• B) Ribosome
• C) Mitochondrion
• D) Cytoplasm
74
464. Which of the following is an example of mutualism?
• A) A lion hunting a zebra
• B) A bee pollinating a flower
• C) A tapeworm living in the intestines of a human
• D) A predator eating its prey
465. Which of the following organelles is primarily responsible for producing energy in the
cell?
• A) Golgi apparatus
• B) Mitochondrion
• C) Ribosome
• D) Chloroplast
466. Which of the following is true about the process of osmosis?
• A) It requires energy
• B) It involves the movement of water molecules from an area of low to high
concentration
• C) It involves the movement of water molecules from an area of high to low
concentration
• D) It occurs only in plant cells
467. What is the function of white blood cells in the human body?
• A) To carry oxygen
• B) To fight infection
• C) To clot the blood
• D) To store glucose
468. Which of the following best describes the role of enzymes in the body?
• A) They provide energy
• B) They speed up chemical reactions
• C) They protect the body from infections
• D) They transport oxygen
469. Which of the following is a function of the smooth endoplasmic reticulum?
• A) Synthesizing proteins
• B) Producing energy
• C) Detoxifying harmful substances
• D) Storing genetic information
464. Which of the following is an example of mutualism?
• A) A lion hunting a zebra
• B) A bee pollinating a flower
• C) A tapeworm living in the intestines of a human
• D) A predator eating its prey
465. Which of the following organelles is primarily responsible for producing energy in the
cell?
• A) Golgi apparatus
• B) Mitochondrion
• C) Ribosome
• D) Chloroplast
466. Which of the following is true about the process of osmosis?
• A) It requires energy
• B) It involves the movement of water molecules from an area of low to high
concentration
• C) It involves the movement of water molecules from an area of high to low
concentration
• D) It occurs only in plant cells
467. What is the function of white blood cells in the human body?
• A) To carry oxygen
• B) To fight infection
• C) To clot the blood
• D) To store glucose
468. Which of the following best describes the role of enzymes in the body?
• A) They provide energy
• B) They speed up chemical reactions
• C) They protect the body from infections
• D) They transport oxygen
469. Which of the following is a function of the smooth endoplasmic reticulum?
• A) Synthesizing proteins
• B) Producing energy
• C) Detoxifying harmful substances
• D) Storing genetic information
75
470. Which of the following is a characteristic of all living organisms?
• A) Ability to move
• B) Ability to reproduce
• C) Ability to perform photosynthesis
• D) Ability to digest food
471. Which of the following is the primary function of the immune system?
• A) To transport oxygen throughout the body
• B) To defend the body against infections
• C) To break down food into nutrients
• D) To regulate body temperature
472. Which of the following is true about prokaryotic cells?
• A) They have a membrane-bound nucleus
• B) They lack a membrane-bound nucleus
• C) They contain multiple chromosomes
• D) They are larger than eukaryotic cells
473. What is the primary role of the pancreas in the human digestive system?
• A) To produce bile
• B) To absorb nutrients
• C) To produce digestive enzymes
• D) To store food
474. Which of the following is a characteristic of reptiles?
• A) They lay eggs that develop outside the body
• B) They are warm-blooded
• C) They have feathers
• D) They give live birth
475. Which of the following is true about the process of meiosis?
• A) It results in two genetically identical daughter cells
• B) It results in four non-identical daughter cells
• C) It is used for the repair of damaged tissues
• D) It occurs only in somatic cells
470. Which of the following is a characteristic of all living organisms?
• A) Ability to move
• B) Ability to reproduce
• C) Ability to perform photosynthesis
• D) Ability to digest food
471. Which of the following is the primary function of the immune system?
• A) To transport oxygen throughout the body
• B) To defend the body against infections
• C) To break down food into nutrients
• D) To regulate body temperature
472. Which of the following is true about prokaryotic cells?
• A) They have a membrane-bound nucleus
• B) They lack a membrane-bound nucleus
• C) They contain multiple chromosomes
• D) They are larger than eukaryotic cells
473. What is the primary role of the pancreas in the human digestive system?
• A) To produce bile
• B) To absorb nutrients
• C) To produce digestive enzymes
• D) To store food
474. Which of the following is a characteristic of reptiles?
• A) They lay eggs that develop outside the body
• B) They are warm-blooded
• C) They have feathers
• D) They give live birth
475. Which of the following is true about the process of meiosis?
• A) It results in two genetically identical daughter cells
• B) It results in four non-identical daughter cells
• C) It is used for the repair of damaged tissues
• D) It occurs only in somatic cells
76
476. Which of the following is a type of asexual reproduction?
• A) Regeneration in starfish
• B) Fertilization in humans
• C) Pollination in flowers
• D) Reproduction in birds
477. What is the function of the Golgi apparatus in the cell?
• A) Synthesizes proteins
• B) Transports materials throughout the cell
• C) Modifies and packages proteins for secretion
• D) Provides structural support
478. Which of the following is the primary function of the skeletal system?
• A) To protect the body from pathogens
• B) To produce hormones
• C) To provide structure and support for the body
• D) To regulate body temperature
479. Which of the following best describes a community in an ecosystem?
• A) All living and non-living components
• B) Only producers and consumers
• C) Only plants and animals
• D) All the organisms of different species living in the same area
480. What is the term used to describe the exchange of genetic material between
homologous chromosomes during meiosis?
• A) Crossing over
• B) Mutation
• C) Independent assortment
• D) Binary fission
Answers:
461. D) To release water vapor into the atmosphere
462. B) It converts light energy into chemical energy
463. A) Nucleus
464. B) A bee pollinating a flower
465. B) Mitochondrion
466. C) It involves the movement of water molecules from an area of high to low
concentration
476. Which of the following is a type of asexual reproduction?
• A) Regeneration in starfish
• B) Fertilization in humans
• C) Pollination in flowers
• D) Reproduction in birds
477. What is the function of the Golgi apparatus in the cell?
• A) Synthesizes proteins
• B) Transports materials throughout the cell
• C) Modifies and packages proteins for secretion
• D) Provides structural support
478. Which of the following is the primary function of the skeletal system?
• A) To protect the body from pathogens
• B) To produce hormones
• C) To provide structure and support for the body
• D) To regulate body temperature
479. Which of the following best describes a community in an ecosystem?
• A) All living and non-living components
• B) Only producers and consumers
• C) Only plants and animals
• D) All the organisms of different species living in the same area
480. What is the term used to describe the exchange of genetic material between
homologous chromosomes during meiosis?
• A) Crossing over
• B) Mutation
• C) Independent assortment
• D) Binary fission
Answers:
461. D) To release water vapor into the atmosphere
462. B) It converts light energy into chemical energy
463. A) Nucleus
464. B) A bee pollinating a flower
465. B) Mitochondrion
466. C) It involves the movement of water molecules from an area of high to low
concentration
77
467. B) To fight infection
468. B) They speed up chemical reactions
469. C) Detoxifying harmful substances
470. B) Ability to reproduce
471. B) To defend the body against infections
472. B) They lack a membrane-bound nucleus
473. C) To produce digestive enzymes
474. A) They lay eggs that develop outside the body
475. B) It results in four non-identical daughter cells
476. A) Regeneration in starfish
477. C) Modifies and packages proteins for secretion
478. C) To provide structure and support for the body
479. D) All the organisms of different species living in the same area
480. A) Crossing over
481. Which of the following structures is responsible for carrying oxygenated blood away
from the heart?
• A) Veins
• B) Capillaries
• C) Arteries
• D) Lymph vessels
482. Which process is responsible for the breakdown of glucose to release energy in cells?
• A) Photosynthesis
• B) Cellular respiration
• C) Transpiration
• D) Fermentation
483. Which organ is responsible for filtering waste from the blood?
• A) Liver
• B) Lungs
• C) Kidneys
• D) Stomach
484. What is the main function of hemoglobin in red blood cells?
• A) To fight infections
• B) To transport oxygen
• C) To break down food
• D) To produce energy
485. Which part of the brain is responsible for coordinating voluntary movements?
• A) Cerebrum
• B) Cerebellum
• C) Medulla oblongata
• D) Hypothalamus
486. What is the term for organisms that produce their own food?
467. B) To fight infection
468. B) They speed up chemical reactions
469. C) Detoxifying harmful substances
470. B) Ability to reproduce
471. B) To defend the body against infections
472. B) They lack a membrane-bound nucleus
473. C) To produce digestive enzymes
474. A) They lay eggs that develop outside the body
475. B) It results in four non-identical daughter cells
476. A) Regeneration in starfish
477. C) Modifies and packages proteins for secretion
478. C) To provide structure and support for the body
479. D) All the organisms of different species living in the same area
480. A) Crossing over
481. Which of the following structures is responsible for carrying oxygenated blood away
from the heart?
• A) Veins
• B) Capillaries
• C) Arteries
• D) Lymph vessels
482. Which process is responsible for the breakdown of glucose to release energy in cells?
• A) Photosynthesis
• B) Cellular respiration
• C) Transpiration
• D) Fermentation
483. Which organ is responsible for filtering waste from the blood?
• A) Liver
• B) Lungs
• C) Kidneys
• D) Stomach
484. What is the main function of hemoglobin in red blood cells?
• A) To fight infections
• B) To transport oxygen
• C) To break down food
• D) To produce energy
485. Which part of the brain is responsible for coordinating voluntary movements?
• A) Cerebrum
• B) Cerebellum
• C) Medulla oblongata
• D) Hypothalamus
486. What is the term for organisms that produce their own food?
78
• A) Consumers
• B) Decomposers
• C) Autotrophs
• D) Heterotrophs
487. Which of the following statements about enzymes is true?
• A) Enzymes are used up in chemical reactions
• B) Enzymes lower the activation energy of reactions
• C) Enzymes function at all pH levels
• D) Enzymes slow down chemical reactions
488. Which of the following is an example of a non-vascular plant?
• A) Fern
• B) Moss
• C) Oak tree
• D) Sunflower
489. Which hormone regulates blood sugar levels?
• A) Insulin
• B) Adrenaline
• C) Thyroxine
• D) Estrogen
490. What is the role of the large intestine in the digestive system?
• A) Digests proteins
• B) Absorbs water
• C) Produces bile
• D) Breaks down fats
491. Which type of reproduction involves the fusion of male and female gametes?
• A) Asexual reproduction
• B) Sexual reproduction
• C) Binary fission
• D) Budding
492. Which of the following structures controls what enters and exits the cell?
• A) Nucleus
• B) Cytoplasm
• C) Cell membrane
• D) Mitochondrion
493. Which gas is released during photosynthesis?
• A) Oxygen
• B) Carbon dioxide
• C) Nitrogen
• D) Hydrogen
494. What is the primary function of platelets in the blood?
• A) To transport oxygen
• B) To fight infections
• C) To help in blood clotting
• D) To digest food
• A) Consumers
• B) Decomposers
• C) Autotrophs
• D) Heterotrophs
487. Which of the following statements about enzymes is true?
• A) Enzymes are used up in chemical reactions
• B) Enzymes lower the activation energy of reactions
• C) Enzymes function at all pH levels
• D) Enzymes slow down chemical reactions
488. Which of the following is an example of a non-vascular plant?
• A) Fern
• B) Moss
• C) Oak tree
• D) Sunflower
489. Which hormone regulates blood sugar levels?
• A) Insulin
• B) Adrenaline
• C) Thyroxine
• D) Estrogen
490. What is the role of the large intestine in the digestive system?
• A) Digests proteins
• B) Absorbs water
• C) Produces bile
• D) Breaks down fats
491. Which type of reproduction involves the fusion of male and female gametes?
• A) Asexual reproduction
• B) Sexual reproduction
• C) Binary fission
• D) Budding
492. Which of the following structures controls what enters and exits the cell?
• A) Nucleus
• B) Cytoplasm
• C) Cell membrane
• D) Mitochondrion
493. Which gas is released during photosynthesis?
• A) Oxygen
• B) Carbon dioxide
• C) Nitrogen
• D) Hydrogen
494. What is the primary function of platelets in the blood?
• A) To transport oxygen
• B) To fight infections
• C) To help in blood clotting
• D) To digest food
79
495. Which of the following is an example of an inherited trait?
• A) Speaking a language
• B) Riding a bicycle
• C) Eye color
• D) Playing an instrument
496. Which part of the plant absorbs water and minerals from the soil?
• A) Stem
• B) Leaf
• C) Root
• D) Flower
497. Which of the following is NOT a characteristic of all living things?
• A) Growth
• B) Movement
• C) Photosynthesis
• D) Reproduction
498. What is the function of ribosomes in the cell?
• A) Transport nutrients
• B) Store genetic information
• C) Synthesize proteins
• D) Produce energy
499. Which type of muscle is found in the heart?
• A) Smooth muscle
• B) Skeletal muscle
• C) Cardiac muscle
• D) Voluntary muscle
500. Which of the following is a function of the liver?
• A) Producing insulin
• B) Detoxifying harmful substances
• C) Absorbing nutrients
• D) Pumping blood
Answers:
481. C) Arteries
482. B) Cellular respiration
483. C) Kidneys
484. B) To transport oxygen
485. B) Cerebellum
486. C) Autotrophs
487. B) Enzymes lower the activation energy of reactions
488. B) Moss
489. A) Insulin
490. B) Absorbs water
495. Which of the following is an example of an inherited trait?
• A) Speaking a language
• B) Riding a bicycle
• C) Eye color
• D) Playing an instrument
496. Which part of the plant absorbs water and minerals from the soil?
• A) Stem
• B) Leaf
• C) Root
• D) Flower
497. Which of the following is NOT a characteristic of all living things?
• A) Growth
• B) Movement
• C) Photosynthesis
• D) Reproduction
498. What is the function of ribosomes in the cell?
• A) Transport nutrients
• B) Store genetic information
• C) Synthesize proteins
• D) Produce energy
499. Which type of muscle is found in the heart?
• A) Smooth muscle
• B) Skeletal muscle
• C) Cardiac muscle
• D) Voluntary muscle
500. Which of the following is a function of the liver?
• A) Producing insulin
• B) Detoxifying harmful substances
• C) Absorbing nutrients
• D) Pumping blood
Answers:
481. C) Arteries
482. B) Cellular respiration
483. C) Kidneys
484. B) To transport oxygen
485. B) Cerebellum
486. C) Autotrophs
487. B) Enzymes lower the activation energy of reactions
488. B) Moss
489. A) Insulin
490. B) Absorbs water
80
491. B) Sexual reproduction
492. C) Cell membrane
493. A) Oxygen
494. C) To help in blood clotting
495. C) Eye color
496. C) Root
497. C) Photosynthesis
498. C) Synthesize proteins
499. C) Cardiac muscle
500. B) Detoxifying harmful substances
491. B) Sexual reproduction
492. C) Cell membrane
493. A) Oxygen
494. C) To help in blood clotting
495. C) Eye color
496. C) Root
497. C) Photosynthesis
498. C) Synthesize proteins
499. C) Cardiac muscle
500. B) Detoxifying harmful substances